Max Martin, a 43-year-old Swede, has co-written more #1 singles than anyone since the Beatles. His credits include “I Want It That Way”, “Oops!… I Did It Again”, “It’s My Life”, “Since U Been Gone”, “I Kissed a Girl”, “Shake It Off”, “Everybody (Backstreet’s back)”, “As long as you love me” for the Backstreet Boys, “I want you back”, “Tearin’ up my heart” and “It’s gonna be me” for N’Sync and much more.