Hansen established himselves on the Oslo jazz scene first in Tore Sandnæs Big Band (1958), Mikkel Flagstad Quintet (1959), Bjørn Jacobsen Septet (1958–60), Arild Wikstrøm Quartet (1961) and within Kjell Karlsen's various ensembles including at Moldejazz (1962), Bjørn Johansen Quartet (1962).
Bjørn Tronstad | Bjørn Dæhlie | Arne Jacobsen | Barbro-Lill Hætta-Jacobsen | Peter Jacobsen | Jens Peter Jacobsen | Casey Jacobsen | Bjørn Rune Gjelsten | Bjørn Einar Romøren | Robert Jacobsen | Joseph Jacobsen | J. C. Jacobsen | Jacobsen v. Katzer | Erik Jacobsen | Carl Jacobsen | Bjørn Wirkola | Annie Jacobsen | Wayne Jacobsen | Thorkild Jacobsen | Thomas Owen Jacobsen | Steinbjørn B. Jacobsen | On ''Spirit of Norway 10'' with Bjørn Rune Gjelsten | O'Love Jacobsen | Mikkel Borch-Jacobsen | Mette Jacobsen | Jannicke Systad Jacobsen | Bjørn Ousland | Bjørn Kruse | Bjørn Kjos | Bjørn Jarle Rødberg Larsen |