Claim: Jon Georg Balke was active in the groups of Radka Toneff (a Norwegian jazz singer) and in the Afrofusion group E'olén before joining Oslo 13 and Masqualero then he focused on his own projects, such as JøKleBa (with Audun Kleive and Per Jørgensen) and the Magnetic North Orchestra.
Evidence: He was active in the groups of Radka Toneff and in the Afrofusion group E'olén before joining Oslo 13 and Masqualero in the early 1980s. From 1989 he focused on his own projects, such as JøKleBa (with Audun Kleive and Per Jørgensen) and the Magnetic North Orchestra for which he composed the commissioned work Il Cenoneat to Vossajazz 1992.