1300 Oslo (active from 1979 in Oslo, Norway) was a Norwegian jazz band originally called Oslo 13 (1979–93), founded and operated the first two years by Bror Hagemann and continuated by Jon Balke.
[1] In 1994 the band got a joint leadership with Trygve Seim, Morten Halle and Torbjørn Sunde, and changed their name.
[2] The band's first release was the album Anti-therapy (1981).
Oslo 13 was awarded Spellemannprisen in 1988 for the album Off balance.
[3] The follow-up Nonsentration (1992) also was an acclaimed album.