[msknight]

I'm subbed to all four of those - the Six Appeal vocal percussion/beatbox demon in the park was fun - https://www.youtube.com/watch?v=2J7WXyg03hs - and the Pentatronix CD is ordered. The rest are locked and loaded for various pay days in the future.
 
Will get to the earlier suggestions after the Saturday morning shopping trip.

 

[Mython]

Beatbox and hip-hop aren't at all my cup of tea, but the following vid was a viral hit, a while back, and I can appreciate the skill:
 
 
https://www.youtube.com/watch?v=g0_2vmkTmf0