[1][2] TJO has collaborated with Norwegian composers such as Erlend Skomsvoll, Eirik Hegdal, Vigleik Storaas, Jon Balke, Knut Kristiansen, Geir Lysne, Terje Rypdal and Bendik Hofseth, as well as with international soloists such as Chick Corea, Pat Metheny, New York Voices, Birger Sulsbruck and Joshua Redman.

The collaboration with Chick Corea was resumed in 2006 with a concert at the Hilton Ballroom in New York City during the Annual Jazz Conference (IAJE) in January of that year.

This edition of TJO included musicians such as Live Maria Roggen, Ola Kvernberg and Steinar Nickelsen.

On Moldejazz 2006 TJO did a project with music by Eirik Hegdal featuring Joshua Redman as a soloist, followed by a tour in the late fall of 2008.

During Trondheim Chamber Music Festival TJO gave their first performance of commissioned work by saxophonist Bendik Hofseth.