Matthew Arnold Thiessen (born August 12, 1980) is a Canadian-American musician, known for being co-founder, lead singer, guitarist, pianist, and primary songwriter for the Christian rock band, Relient K. He also works as a producer (beginning 2009), along with Mark Lee Townsend. He also dated Perry before she became famous for short amount of time.
Work with Katy Perry[]
He worked with Katy Perry on the following songs:
Songs from (A) Katy Perry (2005):
- "Box"
- "Diamonds"
- "It's Okay to Believe"
- "Long Shot" (Later given to Kelly Clarkson for All I Ever Wanted)
- "Simple"
Songs from One of the Boys (2008):
Songs from Teenage Dream: The Complete Confection (2012):