Career
He later on took the name The Moniker as his stage name. Karlsson participated in Idol 2007. His interpretation of John Farnham"s "You"re the Voice" was included in the album Det bästa från Idol 2007 (The Best from Idol 2007).
In October 2008 Karlsson released his first single "Would You Believe". recorded a music video for the song.
He again took part in Melodifestivalen in 2012 with the song "I Wanna Be Chris Isaak (This Is Just the Beginning)." After the first round of voting it was revealed that he came last, failing to advance further in the competition. Daniel Karlsson took part, alongside Karl Martindahl and Robin Bengtsson in the charity single "Wake Up World", the official release for "Hjälp Haiti".