[1][2] Broo is the son of trumpeter, raised in Västervik, and participated in Visby big band before he attended musical training at North Texas State University (1984–1990).

Back in Sweden, he was incorporated into Fredrik Norén Band (1991–1999), and also collaborated in the orchestra of Lennart Åberg.

[1] Broo's expression is a continuation of free jazz and Ornette Coleman's style from the 1960'th, and he is central in the Norwegian/Swedish band Atomic (1999–).

[2] He also leads his own 'Magnus Broo Quartet with Torbjörn Gulz on piano, Mattias Welin on bass and Jonas Holgersson on drums.

They released the albums Sudden Joy (1999), Levitaton (2001), Sugar Promise(2003) and Pain Body (2008).