This is Frank's son Dweezil in his Band Zappa plays Zappa. I saw this exact band - they were incredible. Some amazing soloing starts at 2:30 and then again several other times during this performance that includes Steve Vai, Terry Bozzio, Napolian Murphy Brock and all these other wonderful musicians.
Thought I'd mention that I just saw Dweezil again on Sunday 10/13. Another incredible show! On this tour, they played the "Roxy & Elsewhere" album all the way through. Seems like every time I see them them make a point to play all the hard stuff, which I personally appreciate. The "Village of the Sun" and "Echidna's Arf" medley is one of the coolest pieces of music I've ever heard.