Collaborations

William has recorded with : Tawatha Agee, Juan Alderete de la Peña, Don Alias, Wayne Andre, Wayne Anthony, Patti Austin, Michael "Flea" Balzary, Brian Banks, Dave Bargeron, Bob Becker, Tony Berg, Wayne Bergeron, Cedric Bixler-Zavala, Blanche Black, Michael Boddicker, Mary Jo Braun, Randy Brecker, Elmer Brown, Forrest Buchtel, David Campbell, Roberto Cani, Larry Carlton, Diego Casillas, Lenny Castro, Leon "Ndugu" Chancler, Wendie Colter, Larry Corbett, Lol Creme, Mario Cruz, Paulinho da Costa, Mario De Leon, Joel Derouin, Chris Difford, George Duke, Randy Emerick, Peter Erskine, Jon Faddis, Chuck Findley, Frank Floyd, Claudia Fontaine, Alex Foster, David Foster, John Frusciante, Gordon Gaines, Armen Garabedian, Berj Garabedian, James Gilstrap, Kevin Godley, Andrew Gold, Peter Gordon, Graham Gouldman, Gary Grant, Peter Graves, Paul Griffin, Christopher Guest, Herbie Hancock, Larry Harlow, Nelson Hayes, Richard Heath, Marlo Henderson, Gary Herbig, Erick Hernandez, Salvador "Chava" Hernandez, Jerry Hey, Dan Higgins, Bruce Hornsby, Bunny Hull, Kim Hutchcroft, James Ingram, Matt Irving, Michael Jackson, Randy Jackson (Bass Guitar), Randy Jackson (Percussion), Mortonette Jenkins, Augie Johnson, Bashiri Johnson, Louis Johnson, Randy Jones, Suzie Katayama, Peter Kent, Curtis King, Michael Landau, Nick Lane, Lynda Laurence, Gilson Lavis, Edi Lehman, John Lehman, Becky Lopez, Steve Lukather, Roger Manning, Frank Martin, Paul McCandless, Paul McCartney, Michael McKean, Paulette McWilliams, Bobby Mintzer, Ernesto Molina, Othello Molineaux, Fernano Moreno, Gabriele Morgan, Steve Nieve, Isaiah "Ikey" Owens, Sid Page, David Paich, Sheri Payne, Michael Penn, Betsy Petrie, Greg Phillinganes, Jeff Porcaro, Steve Porcaro, Vincent Price, Steven Ray, Dr. John Rebennack, John Robinson, Marcel Rodríguez-López, Omar Rodríguez-López, Patrice Rushen, Corrado Rustici, Beverley Skeete, Steven Soles, Eric Stewart, Rod Temperton, Adrián Terrazas-González, Jon Theodore, Toots Thielemans, Vaneese Thomas, Fonzi Thornton, Glenn Tilbrook, Ron Tooley, Phil Upchurch, Josefina Vergara, Brad Warnaar, Freddie Washington, Julia Waters, Maxine Waters, Oren Waters, Bobby Watson, Wah Wah Watson, Keith Wilkinson, David Williams, Larry Williams, Zedrick Williams, Bill Wolfer, and David "Hawk" Wolinski.