For years now, I've been collecting my versions of Christmas Carols I've made for my youngest students: well-known songs from the English-speaking world: Go tell it on the Mountain, Jingle Bells, We wish you a Merry Christmas; beloved German carols: Ihr Kinderlein kommet, Kling Glöckchen, Schneeflöckchen; and a few old French songs: Il est né, Entre le boeuf... There are some songs that we all know: O Christmas Tree/O Tannenbaum... and there are two pieces here for 4-hands.

All as simple as I...