Paul Williams (+), Scott Cutler, John LoFrumento, Eric Olson with guest, SoFly and Nius, Jim Duguid, Brenda Russell, Hudson, Justin Parker, Greg Holden, Martin Johnson, Mikkel Eriksen, Derek Fuhrmann, Todd Clark, Dr Luke, Mary Lambert, The Futuristics, Alex Schwartz with Joe Khajadourian, Dino Zisis, Skylar, fun (band), Nate Ruess, Andrew Dost, Jack Antonoff, Matthew Koma, Scott Gold, Jermaine Dupri, Kid Harpoon, John Hill, Lily Elise, ____127, Phredley Brown, Jackson Browne (+), Tom Petty with Dana York (+), Jason Halbert with guest, Savan Kotecha, Linus Eklow, Paul Jeffries aka Nineteen85,
