"Mary, did you know" (Pentatonix) - easy piano tutorial with Synthesia and sheet music "Mary, did you know?" - composed by Pentatonix - how to play on the piano, easy piano tutorial for beginners with Synthesia and sheet music: Sheet music for this version of “Mary, did you know?” available here - please click here. Margaret JurewiczDecember 16, 2023Comment 0 Likes