Martin Sandberg, known professionally as Max Martin, (born 26 February 1971) is a Swedish music producer and songwriter. He broke through as a producer and songwriter in the mid-1990s after crafting a string of hits for pop artists like Ace of Base, E-Type, the Backstreet Boys, Britney Spears, *NSYNC and Robyn. Some of his earlier hits include "Quit Playing Games (With My Heart)", "...Baby One More Time" and "It's My Life". His trademark during the second half of the 1990s and the early 2000s was a danceable, keyboard-laden pop sound that blended music styles such as funk, heavy metal and europop. However, with Kelly Clarkson's 2004 hit "Since U Been Gone", Martin stepped back into the spotlight after reinventing himself with a heavier, rock-tinged sound. Since 2008, he has written and co-written more than 10 number-one hits, including "So What" by Pink, "Hot n Cold", "I Kissed a Girl" by Katy Perry, and "My Life Would Suck Without You" by Kelly Clarkson. Since 2010, he has co-written ten top-10 singles, including "Dynamite" by Taio Cruz, "DJ Got Us Fallin' in Love" by Usher, "Whataya Want From Me" by Adam Lambert, "F**kin' Perfect" by Pink, and "Hold It Against Me" by Britney Spears.

Work with Katy PerryEdit

He worked with Katy Perry on the following songs:

Songs from One of the Boys (2008):

• "Hot N Cold"
• "I Kissed a Girl"

Songs from Teenage Dream (2010):

• "California Gurls"
• "E.T."
• "Last Friday Night (T.G.I.F.)"
• "Part of Me"
• "Teenage Dream"
• "The One That Got Away"

Songs given to other artists:

• "Slow Goodbye" (Lesley Roy - Unbeautiful)