Jazz artist who all became known after debuting in Oslo in 1967 together with Jan Garbarek and Palle Mikkelborg. He started the Ivar Antonsen Trio in the past due 1960s with Espen Rud and Terje Venaas alternating on drums. He was a teacher at California Condition School from 1995 until 2004. His family members prompted his musical ambitions in early stages, and he started playing the organ and accordion while he was still youthful. He was motivated by Igor Stravinsky’s and Johann Sebastian Bach’s compositional versions.