Hoff is a graduate of the Teachers' College in Bodø and Bergen, and was further educated on the Jazz program at Trondhein musikkonservatorium under Terje Bjørklund (1986–89), and in Composisjon at Norges Musikkhøgskole (2001).
Jan van Eyck | Jan Matejko Academy of Fine Arts | Jan Hammer | Jan Peerce | Jan Hus | Jan Mayen | Jan Guillou | Gunnar Myrdal | Jan Smuts | Jan Fabre | Jan Morris | Jan Matejko | Jan Garbarek | Ignacy Jan Paderewski | Jan van Riebeeck | Jan Troell | Jan Tinbergen | Jan Neruda | Jan-Michael Vincent | Jan Kochanowski | Jan Brewer | Jan Bechtum | Jan Zamoyski | Jan Ullrich | Jan Peter Balkenende | Jan Egeland | Gunnar Hansen | Frans van der Hoff | Robert Jan Stips | Mian Shakirullah Jan |
Bjørn Alterhaug (1991), Kjell Öhman (1993), with Jan Gunnar Hoff Group (1992–), Sigurd Ulveseth Trio (1993–), «Radiostorbandet» (1971–90), a big band led by Helge Hurum, Jens Wendelboe, Kjell Karlsen and Fred Nøddelund.
He toured in the period 1999-2003 together with the trupeter Gustavo Bergalli, within the band «Blix/Bergalli Group» comprising additional Jan Gunnar Hoff (piano), Sigurd Ulveseth (bass) and Magnus Gran (drums).