ForceInfinity wrote:I would put out there James Labrie of Dream Theater (he replaced Charles Dominici who in turn replaced Chris Collin.... Labrie better than both) and the band has been arguably successful with him.. How come no mention for Mickey Thomas and Jefferson Starship (he replaced Marty Balin I believe)? And as far as I know Dream Theater is *very* active with that singer as is what's left of Starship/Jefferson Starship/whatever the hell they call themselves (never understood the whole thing with the names)
Wasn't aware Dream Theater ever had a different singer than LaBrie.

Interesting. That said, I can't imagine anyone else's voice except for his singing their catalog.
As for Mickey Thomas, you're sorta right. It's complicated but basically, after many, many incarnations of the band that started as Jefferson Airplane, founding member Paul Kantner decided to change the name in 1974 when the band all but disintegrated leaving only Kantner and Grace Slick making up the band. Kantner used the cleansing as a reboot and new direction for his music. Jefferson Starship was born which included new member Marty Balin who's vocals brought the first commercial success thus far. Balin left in 1978 and was replaced by barely known singer/songwriter Mickey Thomas whose only real fame was singing lead vocals on the Elvin Bishop tune, Fooled Around and Fell in Love. Between 1979 and 1984, the band gradually gained commercial success and continued ushering in and out musicians such as Aynsley Dunbar, formerly of Journey of course. In June 1984, Paul Kantner, the last remaining founding member of Jefferson Airplane, left Jefferson Starship, took legal actio over the Jefferson Starship name against his former bandmates. Kantner settled out of court and signed an agreement that neither party would use the names "Jefferson" or "Airplane" unless all members of Jefferson Airplane, Inc. (Bill Thompson, Paul Kantner, Grace Slick, Jorma Kaukonen, Jack Casady) agreed. Thus, the remaining members of the band that once was Jefferson Starship was forced to immediately change the name or face legal action. For about a minute the band was actually called Starship Jefferson but everyone quickly saw how ridiculous and petty it was and decided to go with just Starship.
This is just the absolute tiniest nutshell version I could squeeze together to give some perspective as to why the name changes occurred. The history of the band(s) is extremely lengthy and involve somewhere in the neighborhood of 40 different musicians using the revolving door in that enterprise. So, yes, Thomas was indeed a replacement for Balin but when you look at the entire history of the band as a whole, every member of the band was a replacement for somebody at some point.
I will say I like both of them. They did justice to the songs for which they sang/wrote while with their respective incarnations of the group.