Record the sound of your keyboard or piano directly through an audio interface, and connect the USB MIDI output of your keyboard up to your Mac or PC to create a MIDI track at the same time.
Read more about my setup on Amazon by following the links below (all are Amazon affiliate links *)
Focusrite Scarlett 2i4 USB audio interface: amzn.to/2XjZUtz
Roland Go Piano: amzn.to/328Qe47
Sony MDR-7506 Headphones: amzn.to/2Xnb40y
Audio Technica AT2020 USB+ USB Mic (for voiceover): amzn.to/2Xnk463
Reaper DAW recording software: www.reaper.fm/
Step 1: Make sure you have correctly connected up your audio interface, then connect the audio output of your keyboard (either the line out, aux out or headphone out) to the line inputs of the interface.
Step 2: Make the MIDI connection. Most keyboards have a USB MIDI output so you should be able to connect the piano or keyboard directly up to the PC or Mac. If you only have MIDI ports, then you can use a USB MIDI interface, or if your audio interface has MIDI in and out, then you can use standard MIDI leads to connect your keyboard via your interface
Step 3: Open up your DAW recording software(Reaper, Cubase, Garageband, Pro Tools, Ableton ..... etc) and check all the settings to make sure you have correctly enabled your audio interface for audio recording, and your keyboard for MIDI input.
Step 5: Create a MIDI track, and an audio track. Check that you have routed the audio output of your interface to the audio track, and the MIDI input to your MIDI track. Assign a virtual instrument to your MIDI track.
Step 6: Arm both tracks for recording, then on the main transport bar, start recording .... if everything has been set up correctly then you should find you are recording audio and MIDI tracks simultaneously.
Note that you do not have to record your keyboard, using this method you could create, say, a vocal track through your interface at the same time as playing your keyboard and creating a MIDI track.
* Please note, as an Amazon Associate I earn from qualifying purchases. I also post other affiliate links in my descriptions. If you choose to buy from my links, you will not pay any more, but I will earn a small commission. I only post links to products and services that I know, like and trust. And I thank you for your support :)