A very cool instrument. You don't have to be a musician to play it, just a crude sense of melody, harmony and rhythm are the only requirements. (That and at least one working finger on each hand).
Our local Wal-Mart has a sale on these babies for $15 a pop. My sons and I got three of them the other night. We are sounding like "dueling banjos" already.
Our van's been a-rockin'. Good times.