Karl Martin Sandberg, known professionally as Max Martin, is a Swedish songwriter, record producer, and musician. He rose to prominence in the late 1990s making a string of hit singles such as Britney Spears's "...Baby One More Time" (1998), the Backstreet Boys' "I Want It That Way" (1999), Céline Dion's "That's the Way It Is" (1999) and NSYNC's "It's Gonna Be Me" (2000).

Max Martin