Who ARE these guys???

In this case, this REALLY is a mystery.  I don't have any idea who this group is.... but  they must 'ave found a guitar player hitchhiking along side the road and took pity on him..  ha!!

Here is THE answer:

Huh?:  My only guess is that the young one in the group looks a lot like Buddy Wachter.... ouch.

                                         (just kidding...)