Kevin Rickardson
Howard "Howie D." Dorough
Alexander James "AJ" McLean
Brian "B-Rok" Littrell
Nick Carter
Max Martin, Rami, Henrik Janson,
Stockholm Session Strings,
Lisa Miskovsky, Esbjörn Öhrwall,
Peter Svensson, Thomas Lindberg,
Franciz & Lepont, Rodney Jerkins,
Dan Hill, Tony Battaglia,
Jimmy Bralower, L.A.East studio String Orchestra, Per Magnusson,
David Kreuger, Gustave Lund,
Kristian Lundin, Andreas Carlsson,
Adam Anders, Nathan East,
Michael Thompson, Babyface,
Jake, Brian Kierulf, Josh Schwartz,
Randy Bowland, Larry "Rock" Campbell, Timmy Allen,
Calum MacColl, Andrew Froom,