Psycore was a Swedish alternative metal group formed in Gothenburg in 1996, consisting of vocalist Markus Jaan, guitarist Carlos Sepulveda, bass guitarist Hansi Baumgartner and drummer Hans Wilholm. In 1997, the band released their debut EP The Future is a Fact and the single "I Go Solo". Their first full-length album, Your Problem, was released in 1998, featuring notable tracks such as "Fullblood Freak" and "Medication". The band's second and final album, I'm Not One of Us, was released in 1999. After disbanding, Markus Jaan and Carlos Sepulveda formed Sweden's Finest, which also disbanded after two albums. Sepulveda later created the alternative electronica group Mikrotone with Freddie Wadling, releasing one album entitled Spraylove (2003). Sepulveda founded the studio Belly of the Whale to record these projects and started Magellan Radio in 2009. In 2014, he became a member and producer of the band Leather Nun.
