Jim, you say. This seems a little unusual, even for you. Since when are you into folk music, and Finnish folk music at that? My friend, if this seems unusual to you then you do not know me well enough. However, my route to this sudden interest may be a tad uncommon.
I discovered this group by way of a song, a polka to be exact. Loituma's acapella version is the background music to a hypnotic flash animation featuring a high-res CGI King of Fighters character dancing with a leek. The song is called Leva's Polka & you can find the flash animation here. (May not be appropriate for work due to bouncy bits.)
The original song can be downloaded here thanks to YouSendIt.com.
If you would like to see them perform the song live, watch them on Google Vvideo.
There is also a great electronic remix you can download.
I'll have another (unrelated) download ready for June 15th, but until then,
- E V I L O U T -
P.S. I written a Red Meat comic.