...that was defined by a moment...that that was the moment. That lineup will be "Deep Purple" for most...

Ian Gillan (the screamer), Jon Lord, Ritchie B, Ian Paice and Roger Glover.

Gillan left and came back a few times...and they had some real interesting fill-ins...

Coverdale and Joe-Lynn Turner as singers (didn't work for me)

Tommy Bolin, Joe Satriani (satchmo) and Steve Morse (most recent) as fill-ins for Blackmore.

The real core though...Paice, Glover(from 2nd lp) and Lord...have held the band together for better or worse (mostly worst once Blackmore decided he wanted to not deal with it anymore)