There's a choral version of "Deck the Halls" in 7/8, which is, once you get it, a blast to sing. You'll never be able to sing it the regular way again.

When I was preparing a song collection a few years ago in grad school, I transcribed a number of songs, but one really challenged me - it was "Leaping and Dancing," a Spanish Christmas Carol that Nowell Sing We Clear (John Roberts, Tony Barrand, Fred Breunig and Andy Davis) sing. It turned out to be simple enough, once I figured out it was in 3/8!

Dan Schatz