Played on a normal piano. I've always liked the song. The progression is three decending whole steps then a half step turn around. Recorded this improvisation as a demonstration for a friend as to how one can come up with an infinite amount of different melodies on any given progression. He was like "can you play greensleeves?" And I'm like "phht whatch this" and recorded right there in front of him. This is the short and completely improvised version, or the rough draft to the longer version I recorded after I thought a bit more about it was well over 8 mb so I could not submit since the file size is limited.