Her genuine reaction is how Violetta was written to react when hearing Alfredo sing as he walks down the street. An incredible moment, for sure.

Dude had great tone, but even more so his balls of steel to sing OPERA, in a hall full of strangers, without any warming up.

You can tell how much she loved this moment. She was surprised but you can tell how happy she was when he joined in. She even sings “O grazie” where the “o amore” is written.

3 stages of perfection 1 she looks around disappointed 2 she is pleasantly surprised, and expresses joy in a very soprano way 3 after hearing the guy, she gets back into it with vigor and passion 😊 Perfection ❤️

That little "O grazie" where she'd normally sing "O amore" was so cute!

You could tell the camera man really wished he sung first 😆

It wasnt rude it was brilliant. He filled the missing part in the show and gave everyone in the audience a unique performance. bravo.

If I remember correctly: as the video says this is the 4th encore. I can only imagine how tiring doing that must be for all singers involved. I believe if I remember the story right, the male tenor either declined or was otherwise unavailable for the piece. I don't know if the singer on stage was aware of this before she started singer but from her general confusion when the tenor section starts without any accompaniment suggests that she was unaware of this. While as many have pointed out it looks like the piano was going to fill in for the tenor, the momentum and general impact of the encore would have been greatly lessened if the music student hadn't stepped in. And to do so with no preparation and still being able to deliver a close to perfect performance is nothing short of a miracle made manifest. To top it all off, as a professional he recognized that his interruption may have been disrespectful and he had the class to apologize after the show. This is dude is a fucking king

Did anyone notice that the pianist was playing the tenors part until Liu started singing and he then just played the bass notes and let Liu sing the upper tenor part. Pretty cool that he just switched it. This was totally awesome. Yes it was a risk on Liu's part, but what the heck - he went for it and worked out. You only live once, right??

To those who think he was rude or impolite - you are wrong. He was not singing her parts. He was singing a part that has been missing which completes the entire piece. It was an unplanned encore piece. Also it's not like he was just a random guy. He is a trained tenor. Unexpected? Sure, but not rude.

The surprise on Lisette's face, that suddenly turns to utter admiration... the "oh grazie" instead of oh amore... she was literally thanking him for raising up and singing the missing part to her... the fact that he thought he was being rude to her and went to apologize... and she took photos with him... you can see it in her face during the performance and in the photo... she was very pleased. And to get that type of approval from one of the best operatic talents in the world... this brought Me to flowing tears.

Normally, you DO NOT sing along at an opera. But this man rightfully broke the rules and created an experience no one would have believed had it not been recorded. Beautiful. ❤️ EDIT: But pls no one else sing along at an opera unless told to, you are not this man who is a trained tenor and was singing a tenor’s part 💀💀

Her reaction was perfect.

As an opera singer, though not professional, I would feel very warmed and pleased that my audience is enjoying my performance so much that he decides to join. It would be a different case if he joined to steal my part or if he just sang in a voice or attitude that made everything look like a joke. Clearly he did not! He is full of enthusiasm, engagement, and bravery, and he got actual skills! If I were lisette I would be glad to see the young generation showing their passion for something I love, it bring me hope for the future!

I’m pretty sure many suddenly became instant Lisette Oropesa admirers because of her genuine and heartfelt reaction. I didn’t know about her before this, and then I became wowed by her amazing talent.

That he can project from the back to the hall means he’s good. He is worthy of this duet

Let it be known that he is not just a "Chinese opera fan." He is also a student in a music school, studying to become an opera singer.

You can see that she is shocked until she hears the vibrato in his voice on his sixth word. She greets it with a smile and an in tune trill, puts her feet up and enjoys his performance. Spontaneous perfection. Perhaps an example of what the Japanese call Wabi-Sabi. Two strangers came together to show the world genuine instant love and respect.

This was too fabulous for words. I'm a retired opera singer (also soprano) and in concert often another part would go missing. As long as, like in this case, the singer was trained, with an excellent voice, who knew the lines & the part without distracting the main singer, she reacted like any seasoned performer would: with glee & appreciation. I'm thrilled that as a result I've gotten to know about this soprano who has a stunningly beautiful voice, agility and craft. Bravi!

This affirms the reality that, in true art, every performance is different. Never say, "you've seen it once, you've seen it all". Someone else can say, "Yeah, but were you there when they did that fourth encore and an impromptu Alfredo sang beautifully from the audience?" A once-in-lifetime experience. Lovely.

That kind of eerie distance his voice had from being so far away was the most moving part. I've no idea what the song was about or what they were saying, not an opera fan, but it sounded like it fit perfectly. Like two people lamenting lost love or finding it. Then his pure decency to attempt to apologize for intruding was also satisfying to know. He acted in the moment, but also took responsibility for it.

For those criticizing this young man-at 24 -being vibrant, impetuous, full of life-he was obviously moved and swept away by the music. She did not seem to mind and played it as if she heard her love singing from afar. This was adorable.

I know she was shocked but I think she honestly appreciated his jumping in. Lisette is so kind and encouraging to up and coming singers who are still training. Bravi both singers, as they both knew what was best for the performance at just the right time. Lisette, to me, is an infallible talent and role model, and the tenor is definitely on his way to good things!

His voice pairs with hers so well, it's almost magical. This really made me think of 1990 Phantom of the Opera miniseries, when the Phantom starts singing the tenor part of 'Oui, c'est toi que j'aime' with Christine as he watches her from Box 5.

Her "oh" and "oh grazie" just warms my heart so much im going to cry

My grandmother is a professional opera singer and she told me a fun fact I never noticed. Opera singers don't wear or use microphone to amplify the sound. Their voices are already loud enough to be able to be heard throughout the entire room. They sometimes do wear recorders to record their voices so that it can be used in advertisement or a video of the opera later

Whaaaaat? How can anyone hate this? This feels like a scene where Prince Charming sings to their princess in an old Disney movie!! Ahh those times 🥰

Isn't this what music about? It's about connection, emotions and enjoyment. I absolutely adore the moment when the student joined her. It was just absolutely beautiful.

He saw his chance and took it- clearly she was grateful for it, and frankly I am impressed he did that without any vocal warmups.

I’d like to think her performances from then on were even more amazing since she can now genuinely understand Violetta’s surprise and joy from personal experience.

She LOVED that. Probably a moment she will look back on at the end of her career with fondness.

This would be one of those experiences you could never get with a CD/recording. The beauty of live performance.

He had a 1990s phantom of the opera moment and TOOK IT

doesn't this just perfectly capture that scene? alfredo heard only from a distance, singing of his love. this feels like a scene out of a movie!

I love that her genuine reaction is the reaction of what her character is actually supposed to be when hearing the male half of the duet (I don't remember the names of the characters)

Such a beautiful moment. Videos like this give me hope for Humanity

It was definitely a ballsy move. But the guy had the chops to pull it off! He saw a chance to show how much he loved opera. And of course it was not planned as this was an encore performance. I think the audience was held in a trance as he sang and they watched her respond to his solo. He held his own and she could not have been more gracious. The fact that he went to her to apologize afterwards shows how much of an opera fan he is. A stand-up guy and a stand out performance from both of them.

This is such a delightful moment. I was very moved by their performance and her reaction! Important to note that this was during her 4th encore, not during the concert performance, which wouldn’t have been appropriate nor appreciated. Encores are not completely impromptu, but a performer only keeps singing as long as the audience “begs” them to by applauding 👏 while remaining seated after each song. When they rise in an ovation (stand up), that signals to the performer that they are content and thank the performer for their performance.

Honestly this was very delightful. It’s an encore piece which are more casual than the main performance and she looked genuinely glad he joined in. It shows the audience really liked her performance so in my opinion it was a huge compliment for her.

This moment was literally "made in heaven" (duet sang from off stage & in a mask)... Lisette is beautiful & has a wonderful personality -- one of the leading coloratura sopranos of today she is a magnificent singer but this video going viral will also be great for her already well-established career! Mr. Liu Jianwei did a marvellous job too... you helped make this performance one of Lisette's MOST memorable for everyone in the audience.

This young man did such a wonderful job, and he wasn't interrupting her. She sang her part, and obviously looked thrilled that someone was participating.

See, as a singer/musician myself, there’s a time and place for audience participation…and this was absolutely the time! Bless him for apologizing, but there was no need, she absolutely loved it and the “grazie” made it even more charming than it already was 🥰🥰🥰🥰🥰 I’ve seen many angles of this already but not this one, so lolz to the guy who took this, clearly he must be kicking himself for not beating him to the punch! 😂

It’s probably moments like these that make it worthwhile for performers/artists. To see someone with the same passion as you and know that person is here to appreciate your art is so meaningful

Can't say l'm an opera fan but even l could tell that was a magical moment for both of them.

Lisette's response is full of charm. I do hope we hear more of that lovely tenor Liu Jianwei.

I wish I could put that second of silence before he starts singing in a bottle, what a wonderful piece of time. Her face noticing that she is about to just be silent for quite a few bars, Lisette's eyes realizing. The incoming awkwardness hanging in the air. And then just the neurons in Liu's brain deciding "just go for it" followed by genuine artistic connection between two singers. Damn! What a moment!

Why do I start crying every time? It's just this beautiful moment shared between humans that transcends us to another place. I feel so happy and emotional and wish my Dad were here to watch it with me. He loved the opera, he would have gotten such a kick out of this.

I never get tired of seeing this clip. Just the amount of talent and appreciation on her face, as well as shock.

What a wonderful reaction. Violetta genuinely surprised to hear Alfredo's voice!

In accordance with the original opera, it was to come as a surprise to the character of the woman that some man from a bit far is replying to her.

Imagine being in the audience when this happened! What an incredible performance by Lisette, her reaction to him singing was perfect!

I just noticed how, at the first bar of Alfredo’s part, she is looking around. I imagine this was definitely a last minute change that wasn’t even made in time to tell her. So I think she was honestly thankful that such a good tenor and helpful fan came to her rescue! Bravi tutti!

I love that her genuine reaction FITS the piece they’re singing. It’s so sweet that they got to have that moment! Maybe they’ll meet again some day!

Look, it’s moments like this that are going to keep Opera and Classical Music alive in our modern era. To the purists that turned their nose up at this, the sad fact is these are dying arts, and audience turnout is at its lowest ever in the West. Let the form have some life breathed into it

I've never heard of Lisette Oropesa before seeing this, but I'm a fina now. What a talent and what a gracious lady.

This is art. Spontaneous and genuine.

That's actually a fantasy of mine doing what that guy did. Only I can't sing let alone sing opera, and I'm super shy about performing in front of people. Oh well, at least I get to live vicariously thru this guy right now ... and that's good enough for me!

The Chinese student apologized for him to jump in. I think he has done the right thing tho. Thumbs up for both.

Every Italian opera fan approves of this beautiful, passionate gesture.

Oh grazie 💖💖💖💖 i love the lisette reaction

I love her expression when "Alfredo" started singing! Her smile and sincere twinkle of appreciation in her eye, really touched me deeply! She showed such humility and gratitude even though he was just part of the audience!🥰😍

They way she goes back at it with renewed vigor shows how much this meant to her

That was beautiful, before, during and after - her "grazie" was clearly heartfelt

I don't usually watch opera but I've rewatched this repeatedly over the past fifteen or so minutes with a smile on my face. It's beautiful and innocent and cute and skilled

We all have no position in judging on what the guy should've done in that time, Lisette seemed ok with it as THERE WAS NO TENOR ORGANISED FOR THE ENCORE. Would you rather an awkward silence to an incomplete opera or a good talent to aid an encore? If he interrupted while there's actual tenor performing then yes he's absolutely rude. But there's wasn't a tenor and he filled in the gap and made it complete as it should be. Get over it and move on with all your negativity.

I haven't cried so hard in such a long time. Her reaction is just breathe taking. Beautiful😍

I think this video (besides everything that had already been praised) really highlights how powerful opera singers are. Unlike today’s generation of pop/RnB singers that literally have to swallow the microphone to hear their voice, this 24 year old could be heard from the back of the auditorium with no sound system support. Just pure, raw talent of opera 😊

This is definition of human being as perfect imperfection

So impressed at him & the accompanist! The accompanist adapted to him adding his voice so quickly, that’s so impressive. Talent is so fun to watch.

Impeccable timing, enough skill to confidently follow and made the soprano lady swoon, classy apology after. Legendary, man-dom shown here.

The surprise on her face, then the astonishment, and the love for another musician just was amazing to see in her facial expressions. The fact that she moved even closer to the edge and tried to see past the blinding stage lights to see her fellow musician just tells me that she was so, so excited and amazed!

She was so cute and so gracious

The acoustics of the Tenor being off camera and far away work so freaking well. I love this.

What an incredibly magical moment. There is no higher complement than for an audience member to be so moved by your singing that they join in. Brava to Ms. Oropeso for her grace and charm.

I love how the accompanist just took it all in stride! Kudos!

Both singers have such talent! And the way she sings “Oh grazie!” is so pure sounding bless her

The guy filming this seems to have a good voice too. I'd love to hear him sing this as well! Nice vibrato! Does anyone know who he is?

No one could deny that this is a beautiful moment and a pleasant surprise we want in life 😃

I just saw La Traviata for the first time and this actually fits so well cause the tenor part is offstage in this scene

He just stole her heart.. Look at her face.. She is so impressed.

She has one of the best voices I've ever heard...absolutely stunning. And his voice is impressive too, as is his impulsive duet. What a moment!

I like how whoever filmed this was singing along to some of the tenor part.

My heart swelled three sizes this day.

i was having a bad mood, but this warmed my heart. it's straight out of a fairytale!!!

Magical moment...stars aligns, right place at the right time ❤

My man definitely has balls of steel. I can barely pick up the phone to call the doctors to make an appointment and here he is belting out his wonderful voice - at the risk of causing a scene in the middle of this performance in front of strangers and a processional singer.

What a wonderful story. The guy has guts and also an incredible voice.

Unprecedented, and yet such a nice surprise. In my many years going to the opera or watching it on TV/KZfaq, I have never seen anything like this. Ms. Oropesa is such a lady for not getting upset with this improvisation which could have ruined her performance.

Of all her years of performance this must be one of the best.

She never leaves the character, even when something beautiful and unexpected like this happen, thats how professional she is

The genuine joy on her face when he began to sing is priceless and beautiful.

4TH ENCORE?? opera singers are out here singing entire operas and FOUR ENCORES like THAT?? ☠️☠️☠️ vocal chords like an olympic weight lifter's arms for real

She freaks out in such an adorable way.

I've been a fan of hers since last year and she's absolutely adorable 😭

Her reaction is priceless and so, so beautiful. Full of pleasure at his daring.

I can't help but love watching her reaction to this voice coming from out of nowhere to join her. I can't help but watch this over and over. Of course it helps that he has a decent voice, atleast what we can hear.

I love how safe, happy, and, well…flattered Oropesa is in this clip. Her reaction seems 100% from the heart! 🎶 🎇

I would feel incredibly grateful if someone filled a missing part so beautifully like that. It was a heartwarming gesture and I think she truly took it as it was intended, to share love of their art and honor the original the best they could, instead of leaving something out. It was moving even though I'm not an opera fan, the gesture was one done in good faith. It's also really amazing that music transcends race as we all recognize beauty with our soul.

I was privileged to witness Lisette's first Violetta in Philadelphia, and to profile her for my opera blog, Taminophile. She is a perfectly lovely person on top of being an amazing singer!

Once in a lifetime moment and he nailed it!! Bravo to you young man, nicely done!