They have worked with artists including Whitney Houston, Backstreet Boys, 2Pac, Mary J. Blige, and JoJo.
Before joining Soulshock, Karlin was already an integral part of Denmark's jazz scene, producing Patti LaBelle's song "All Right Now."
Their big commercial success came with Monica's #1 R&B single "Before You Walk Out of My Life", which they jointly wrote and produced.
In 1999, Soulshock & Karlin enjoyed another #1 single with Whitney Houston's "Heartbreak Hotel", which received two Grammy nominations: Best R&B Song, and Best R&B Performance by a Duo or Vocalist.
Soulshock & Karlin produced songs for the debut solo albums of Cheryl Cole (3 Words) and Alexandra Burke (Overcome).