The Little Drummer Boy Tin Whistle Sheet Music
The notes for this Christmas song were worked out in the key of G on a D whistle. I have also given the easy to follow letter notes. There are only 7 notes in total that are used to play the song. The piano keyboard / accordion chart is included which shows you the keys to play.
Below is another version of the sheet music in the higher key of C Major. It's not too whistle friendly but suitable for piano.