It’s an original work, Tin Whistle is usually in D so I transposed it how I though it should if it’s a D instrument. But perhaps it reads untransposed concert pitch music. First time using the Tin Whistle so any insight would be welcome

@@AnthonyOTooleMusic Yeah, a Tin Whistle in D reads concert pitch music. "In D" means that the 6-finger note is a D, same as how the concert flute (or modern C Flute) used to be called a D Flute And my bad, I assumed this was a setting of a folk tune. Either way, I do quite like it!