If you've heard of them then kudos, not tomany people I meet have. They are crazy mix of trip-hop and techno mixed with Celtic and African style music, they've put out 5 CD's I believe and I would say that Volume 3: Further In Time is my favorite...here is there site, they have this thing where you can remix there tracks..pretty fun...they are definatly diffrent.

http://realworldrecords.com/afrocelts/

I downloaded one of their albums a while ago, though I'm not sure of the name. I love the song "Release"..the combination of instruments and vocals is perfect.