Drums: Ricky Lawson
Bas: Nathan East
Keyboards: Greg Phillinganes & Jeff Babko
Guitars: Steve Lukather & Jay Graydon
Percussion: Lenny Castro & Chris Trujilio
Background vocals: Bill Champlin, Fee Waybill, Richard Page, Mike McDonald.
Lead Vocals: Richard Marx (Can't figure out why he's not at the top ten singers ;), Joseph Williams and Warren Wiebe.

Only my personal opinion.