What If.......
Tony Iommi stays with Jethro Tull.
Steve Harris stays in Smiler.
Bon Scott, Keith Moon and/or John Bonham DON'T die of alcohol poisoning.
Randy Rhoads DOESN'T get on that plane.
Metallica's bus doesn't crash in Sweden in 1986.
Ronnie James Dio and the rest of Elf object to Ritchie Blackmore's dictatorial style take over of their band.
And lastly...
WI I got accepted to Virginia Commonwealth University as a classical guitarist?
(OK that last one is a bit ASB, but does anybody care to take a shot at the others?)