Wildhorn

Dan Bellomy (organ)

John Barrowman, National Symphony Orchestra, Jae Alexander, Martin Yates, John Owen Edwards, Cfraig Barna

Sean McDermott, Kim Criswell (mezzo-soprano), National Symphony Orchestra, Martin Yates, Craig Barna

John Cudia, Jeff Kready, Lewis Cleale, The Broadway Tenors, Ryan Silverman, Max von Essen, Kyle Dean Massey, Brent Barrett, Norm Lewis, Sean McDermott, Matt Cavenaugh, Alan Campbell, Telly Leung, National Symphony Orchestra, Martin Yates

Kevin Koelbl

The Governors

Jessica Simpson, Jane Barnett (background vocal), Margaret Dorn (background vocal), Jessica Simpson & Rosie O'Donnell, Paul Pesco (guitar), Lou Merrini (saxophone), Rob Renino (bass), Dan Shea (drums), Smash Mouth & me, Macy Gray & me, Kiilu Beckwith, Greg Richling (bass), Shane Keister...

Matt Bogart, Elektravox, Matt Bogart and LaChanze, Jessica Boevers, National Symphony Orchestra, Patrick Vaccariello, Martin Yates, Craig Barna, John Owen Edwards

Lisa Richard

Richard Elliot (tenor saxophone), Naoki Yanai (bass), Richard Smith (guitar), Dave Reinhardt (percussion), Dave Reinhardt (drums), Ron Reinhardt (keyboards), Cliff Downes (instruments (emi load: do not use)), Richard Smith (mandolin), Louis Conte (percussion), Dave Reinhardt (keyboards), Tower Of...