There is a CD called "The Celtic Cradle" by Jill Rogoff which is currently available at amazon.com. It contains Suo Gan, Si Lwli Lwli (also Welsh) and 15 other Celtic lullabies from Brittany, Isle of Man, Ireland, Scotland, and Cornwall. A lovely disc. Suo Gan is done a capella, only two verses, though. If you hurry, Amazon has 1 new copy at less than $11!