 Lilja left the Offspring in 1987 to pursue a medical career in oncology, and was replaced by Ron Welty, who was 16 years old at the time.After recording another demo in 1988, The Offspring signed a record deal with a small-time label, Nemesis Records.In March 1989, the band teamed up with producer Thom Wilson (who had worked with the Adolescents, Dead Kennedys, Social Distortion, the Vandals and Youth Brigade) to record their first album, titled "The Offspring".