At 16, he started composing his own songs, and as an exchange student in Kentucky in the U.S. he participated in musicals, talent contests and held his own concerts.

A1 released Here We Come in 1999, The A List in 2000 and Make It Good in 2002, the year Marazzi left the band citing personal reasons.

The song became a hit, staying three months in the top 10 list of VG-Lista Topp 20 (Norway's official single chart).

"In Love with an Angel" was nominated as Song of the Year for Spellemannprisen (Norwegian Grammys), but lost to World Idol winner Kurt Nilsen's "She's So High".

Paint Christmas White[3] was recorded with the Czech National Symphony Orchestra and was certified gold in Norway.

In 2009, Christian played the role of Marius in the Norwegian production of Les Misérables in Oslo Nye Teater.

[4] He has also co-written six entries in the Melodi Grand Prix, three of which came second, "Eastern Wind" written for Torstein Sødal, "Somewhere Beautiful" sung by Nora Foss al-Jabri and "Don't Wanna Lose You Again" sang by him and his band A1.

He also wrote the song "Perfect Villain" performed by Zuhlke in Finland, also finishing 2nd place in the competition there.