Collaborations

Greg has recorded with : Jon Anderson, Bill Armstrong, Bill Bergman, John Berry, Jr., Ron Blair, Dick Braun, Mike Campbell, Lenny Castro, Sharon Celani, Jim Coile, Luis Conte, Scott Crago, Ben Dahlke, Beverly Dahlke-Smith, Richard F.W. Davis, Malcolm "Molly" Duncan, Phil Ehart, John Elefante, Howie Epstein, Glenn Frey, Dean Garcia, Al Garth, Bobbye Hall, Warren Ham, Don Henley, Jerry Hey, Will Hollis, Dave Hope, Garth Hudson, Clydene Jackson, Phil Jones, Martin Jourard, Tony Kaye, Jim Keltner, Nick Lane, Greg Leisz, Kerry Livgren, Stan Lynch, Richard Manuel, Marilyn Martin, Kurt McGettrick, Chris Mostert, David Pack, Tom Petty, Dave Plews, Trevor Rabin, Daniel Rothmuller, Timothy B. Schmit, Steuart Smith, Stephanie Spruill, Chris Squire, Anne Steinhardt, Robby Steinhardt, David A. "Dave" Stewart, Roger Taylor (Queen drummer), Benmont Tench, Michael Thompson, Lee Thornburg, Joe Walsh, Julia Waters, Maxine Waters, Alan White, Donna Williams, Rich Williams, and Jimmy Zavala.