Josh Freese (Evanescence, Avril Lavigne, Nine Inch Nails, A Perfect Circle, Sting, Clay Aiken, The Vandals)

Matt Laug (Slash’s Snake Pit, Alanis Morissette, Lifehouse, Melissa Etheridge, Alice Cooper, The Calling, Christina Aguilera)

Bob Leatherbarrow (20th Century Fox Fanfare, Nelly Furtado, Bette Midler, Dolly Parton, Five For Fighting, Gordon Lightfoot, The Temptations, Rosemary Clooney, Norah Jones, Patti LaBelle, Family Guy, Parks and Recreation, The Simpsons, King Of The Hill)

Tim Pierce (Bruce Springsteen, Bon Jovi, Meat Loaf, Phil Collins, Goo Goo Dolls, Christina Aguilera, Faith Hill, Tracy Chapman, Aly & AJ, Avril Lavigne)

Heday

Phil Cordaio

Blues Saraceno – guitar (Ziggy Marley, Melissa Etheridge, Dweezil Zappa, Taylor Dayne, Poison)

Paul Bushnell (Faith Hill, Ziggy Marley, Joe Cocker, Phil Collins, Rod Stewart, Jewel, Shakira, Hoobastank, Kelly Clarkson, Ashlee Simpson, Backstreet Boys, LL Cool J, Alanis Morissette, Lionel Richie, Chris Isaak, Elton John, Meredith Brooks, Celine Dion)

Lance Morrison (Leann Rimes, Rick Springfield, Don Henley, Rod Stewart, Alanis Morissette)

Eric Holden (The BoDeans, David Foster, John Williams, Josie Cotton, Nina Hagen, The Weepies, Adrianne Gonzalez, JJ Lin, Kyler England, Five For Fighting, Right The Stars, Aleks Syntek, Jeff Chang, Eric Wainaina, Richard Marx, Josh Groban)

Michael Parnell (Michael Damian, Buck McCoy, Brian Setzer, Jennifer Love Hewitt, Meredith Brooks)

Phil Parlapiano (Rod Stewart, John Prine, Tracy Chapman, Lucinda Williams, Grant-Lee Phillips)

Jeff Babko (Neil Young, Frank Ocean, Superbad, James Taylor, Sheryl Crow, Jason Mraz, Mark Guiliana & Beat Music LA, Nathan East, Don Henley, Alanis Morissette, Tim McGraw, Smokey Robinson, Joe Cocker)

Mike Asher

Steve Madaio – Trumpet and Brass Arrangements (Meat Loaf, John Lennon, Earth Wind and Fire, Bob Dylan, Stevie Wonder, Lynyrd Skynyrd, Madonna, B.B. King)

Nick Lane – Trombone and Brass Arrangements (Pussycat Dolls, Taylor Hicks, Josh Groban, Alien Ant Farm, Weird Al Yankovich, The Mars Volta, Joe Cocker, Pink, Ziggy Marley, Warren Hill, Rod Stewart, Fastball, No Doubt, Wailing Souls, REO Speedwagon, Tom Petty, Yes, Supertramp)

Chris Mostert (The Eagles, Glenn Frey, Skrillex, Three Bad Jacks, Smokey Robinson, The Swing Cats, Hank Ballard & The Midnighters)

David "Woody" Woodford (Etta James, Chris Isaak, Joe Bonamossa, Bobby Jones, Pete Anderson, Rod Stewart, Aerosmith, Jerry Lee Lewis, Willie Nelson, Roy Orbison)

Tom Saviano (Chicago, Earth, Muse, Ray Charles, Kiss, Meat Loaf, AOR, Michael Nesmith, Dolly Parton, Dana Glover, Dusty Springfield, Phil Upchurch)

Pat Seymour (Stewart Lindsey, Pretenders, Dave Grusin, Mick Jagger, Balancing Act, Brenda Lee, Michael Palin, Belinda, Carlisle)

Mike Asher

Heday

Michael Parnell (Michael Damian, Buck McCoy, Brian Setzer, Jennifer Love Hewitt, Meredith Brooks)

Stephen Grimm

Luis Conte (Pussycat Dolls, James Taylor, Nelly Furtado, Jewel, Shakira, Phil Collins, Santana, Chicago, Rancid, Mya, Michelle Branch, Vanessa Carlton, Celine Dion, Nelly, Leann Rimes, James Taylor, Enrique Iglesias, Keb’ Mo’, Lionel Richie, Ricky Martin)

Michael Duffy (Poncho Sanchez, Andy Narell, Peter Erskine, Slide Hampton, John Riley, Dick Oatts, Gary Smulyan, and Airto, Recardo Lemvo y su Makina Loca, Joan Sebastain)

Ginger Murphy - Cello (Christina Aguilera, Annie Lennox, Adam Levine, P. Diddy, Sheryl Crow, Michael Buble, Pat Benatar, Kelly Clarkson, Gwen Stefani, No Doubt, Blake Shelton, Michael W. Smith, Barbara Streisand, Carrie Underwood, Usher, Kanye West)

Alicia Bauer - Cello

John Krovoza - Cello (Rumer, Alex & Sierra, Taylor Swift, Robbie Williams, Snow Patrol, R.E.M. Christina Aguilera, Barry Manilow, Daniel Powter)

Indira Rahmatullaeva - Cello 

Lisa Liu - Violin (Nicholas Britell, Geoff Zanelli, Tom Holkenborg, Brian Tyler, Adam Taylor, Bear McCreary, Carter Burwell, Henry Jackman)

Anna Kostyucheck - Violin

Luanne Homzy - Violin (Arnold Steinhardt, Franklin Cohen, Ani Kavafian, Paul Coletti, Ronald Leonard, Niklas Schmidt, Richard Lester, Steven Dann, Paul Neubauer, the Tokyo String Quartet, and members of the Los Angeles Philharmonic)

Jeanie Lim - Viola (Mary J. Blige, Theodore Shapiro, Trent Reznor, Beck, Hunter Hayes, Neil Young, Josh Groban)

Katie McGhie (Air Supply, Of Eden, David Burnham, CW, World Of Color, Kenny D, The Banned Sigmund Freud, Treasure Cast Album, A Wall Apart Cast Album)

Bernie Barlow (Melissa Ethridge, Natalie Grant, Bob Seger, Joe Cocker)

Heather Youmans (Moondance Alexander, Flicka 2, Marley & Me: The Puppy Years)

Kristen Toedtman (Barbra Streisand, David Foster Wallace, Seth McFarlane, John C Reilly)

The Crenshaws

Bill Nesbitt