Rick Wakeman's kids.

Billy and Whitey Bulgar. Oh wait, that's a different arena altogether.

Michael and Tito Jackson
Michael and Janet Jackson
Michael and LaToya Jackson
Michael Anthony and Marc Anthony (separated at birth?)

*Carmine and Vinny Appice
Now this is getting difficult without trying and failing to make puns...
So, these are a bit of a stretch, maybe:
*Randy California (solo) and Ed Cassidy (solo), not siblings, but...
*Dweezil and Moon Zappa, absenting certain Zappa Family collaborations.
*King of Swing, Benny Goodman and Harry Goodman, Jazz bassist with Gene Krupa and Allan Reuss
*The Marx Brothers (ensemble) and Harpo Marx (solo, sorta pulled out the air, for real)

The Andrews Sisters and Julie Andrews
Bing and David Crosby
The Lennon Sisters and John
Billie Joe and Louie Armstrong
The Allman Brothers after they broke up.

Phil and Grahame Lesh (not siblings, but related)
Chris and Oliver Wood
Julian and Nate Adderly
Lee and George Liberace  (business partners at least)
Victor and Roy Wooten

Quote from: lbpesq on May 25, 2018, 07:13:43 PM

Barry/Robin/Maurice and Andy Gibb

Bill, tgo

Unclean!  Unclean!

Peter

The Ramones!

Robben and Mark Ford

Other distant relations in music/entertainment-
Kenny and Steve Rogers
Dave and Eddie Brock
Gene and Richard Simmons
Rod Stewart and Stewart Copeland
Sting and Sting

Ann and Nancy Wilson!

Quote from: peoplechipper on May 26, 2018, 07:33:33 PM
Ann and Nancy Wilson!

Same band.

Peter

yeah yeah...

 

Chris Jagger and his older brother Sir Mick.