[1] He has written for artists such as Jedward, Jordin Sparks, Jason Derulo, NKOTB, Blue, Sugababes, Lemar, JLS, Tinie Tempah, TVXQ, Pixie Lott, Ronan Keating, SHINee, S Club, Girls' Generation, and many more.
Lars and Martin started writing songs and producing tracks together and making their first complete demos with the help of Norwegian singer, Christina Undhjem.
When school ended, Lars, Martin, and Christina kept working on the demos and eventually landed a record deal with MCA/Universal Music, the first act signed to the newly opened label branch in Denmark.
They started getting releases in the United Kingdom with artists like Samantha Mumba,[4] Mis-teeq[1] in the early 2000s, earning them several UK platinum and gold records.
[5][6] After this, Lars went on to co-write and produce hit singles for other major UK artists such as Sugababes,[7] Lemar[8] and JLS.