In January 2001, former Cheiron-members Andreas Carlsson, Kristian Lundin and Jake Schulze assumed the lease of the legendary Cheiron studios.

Together they have written many hit songs, including "Invisible" for Irish boy band D-Side and American Idol contestant Clay Aiken.

Carlsson also co-wrote the song "Strange" for the Alice in Wonderland soundtrack, which was performed by Tokio Hotel and Kerli Kõiv.

The last season Carlsson was a judge in began its run on 7 September 2010 on the Swedish television channel TV4.

On 14 March 2011, Carlsson announced his departure from the jury, citing his desire to go back to songwriting.