Love this thread.
Lead guitarist: Jimi Hendrix
Rhythm Guitarist: Arthur Lee (Love)
Bass Guitarist: John Entwistle
Keyboards: Gregg Allman
Drums: Keith Moon
Vocalist (male) : Van Morrison
Vocalist (female) : Janis Joplin
And, yes, over half my choices are dead, but they're the ones I enjoy most. I just wonder how they'd all sound together.