These guys are great and the dude on the left really knows how to "play his bass guitar".
Thanks for sharing.

Wow! Didn't expect that from Metallica! Really good, thanks for posting Dan.

Jeff

Wow! Well generally if you ask me my opinion on a capella ... it's OK if you like that sort of thing. Both of those were fabulous.

OK, I will stop now with this final one. This sound just took me over for the past week, but I am over it now. I found all these guys, so I now know who they are and where their music is online. So I won't bother any of you again.

Certainly incredibly powerful voices, masterful harmonies, no question.