Complex sentence: Schultzberg had known Stefan Olsdal from a school band in Sweden in 1993 and joined Placebo when the band formed in September 1994, and played on their first studio demo in April 1995, which garnered much industry attention culminating in a deal with Virgin Records.
Split into simpler sentences: Schultzberg had known Stefan Olsdal from a school band in Sweden in 1993 and joined Placebo when the band formed in September 1994. He played on their first studio demo in April 1995, which garnered much industry attention culminating in a deal with Virgin Records.