Biography
The Smack Ballz are a German band covering well known metal and rock songs with an accordion, a cajòn and an acoustic guitar. The already had gigs on the greatest metal open airs in Germany such as Wacken, With Full Force or Summer Breeze.
Some of their songs can be heard on http://www.myspace.com/thesmackballz and http://www.myspace.com/fansiteofthesmackballz but you have to see them live to really know them.
Biography text from Last.fm, available under CC BY-SA.