Of course McCartney/Lennon, but I never could say one stood out while on stage so I didn't put them in. I'll throw out a couple more not mentioned.
-Geddy Lee, just love the voice and obviously Rush is an acquired taste but easily one of my top 5 favorite bands
-Anthony Kiedis, great voice for one of the best of the 90's bands and still kicking a$$ today
-Sting, when he was with The Police
-Roger Daltrey, don't think I saw his name somehow
-Meatloaf, now I only am a fan of BOOH 1, but such heart he put into singing