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Klas Robert Schultzberg was the original drummer for alternative rock band Placebo. Schultzberg had known Stefan Olsdal from a school band in Sweden they were both in, in 1993 and joined Placebo when the band formed in September 1994, helping them to record their first studio demo in April 1995, which garnered much industry attention culminating in a deal with Virgin Records.
Schultzberg initially left the band in September 1995, but rejoined to record the first seven inch single "Bruise Pristine". After an argument in August 1996, before doing their first TV show, Molko decided that it would be best for the band if Schultzberg left. Schultzberg suggested playing together until they finished the promotion of their first album, Placebo. In September 1996, the band was on their first US tour. Before going on stage for their first show in New York, Olsdal informed Schultzberg that he was not going on the tour in Germany that was following the U.S. one. At the manager's request, he did two more shows with the band in Paris after the U.S. tour, the last of which was a performance on "Nulle Part Aillleurs."
During Schultzberg's time in the band, several early works were recorded including their first 7" single "Bruise Pristine", the "Come Home" EP, the single version of "Nancy Boy" with b-sides "Slackerbitch", "Miss Moneypenny", "Bigmouth Strikes Again" and their eponymous debut album; on the track "I Know", he played didgeridoo as well as drums. He left the band in October 1996 after a strained relationship with Brian Molko.
Since 1996, Schultzberg has been working as a session drummer. In 2001 he was a founding member of the band Lomax with Paul Epworth who released the album A Symbol of Modern Living in 2003.