Truls Mørk performs with the most distinguished orchestras including the Orchestre de Paris, Berliner Philharmoniker, Wiener Philharmoniker, Concert-Gebouworkest, Münchner Philharmoniker, Philharmonia and London Philharmonic Orchestras and Gewandhausorchester Leipzig. In North America  he has appeared with the New York Philharmonic, the Philadelphia and Cleveland Orchestras, Boston Symphony Orchestra and Los Angeles Philharmonic. Conductor collaborations include Esa-Pekka Salonen, David Zinman, Manfred Honeck, Gustavo Dudamel, Sir Simon Rattle, Kent Nagano, Yannick Nézet-Séguin and Christoph Eschenbach, amongst others. He continues to give regular recitals at major venues and festivals throughout the world and regularly works with the pianist, Håvard Gimse.

During 2019/20 season he premiered Victoria Borisova-Ollas’ cello concerto Oh Giselle, Remember Me, commissioned by the Swedish Radio Symphony Orchestra, Bergen Philharmonic Orchestra, Gothenburg Symphony and Royal Liverpool Philharmonic Orchestra. He has also given highly successful performances of Esa-Pekka Salonen’s cello concerto, conducted by the composer at the Royal Festival Hall, Lincoln Center and the Festival d’Aix-en-Provence.

Truls Mørk's recordings include Dvořák’s Concerto (Mariss Jansons/Oslo Philharmonic), Britten’s Cello Symphony and Elgar’s Concerto (Sir Simon Rattle/ CBSO), Miaskovsky Concerto and Prokofiev’s Sinfonia Concertante (Paavo Järvi/ CBSO), Dutilleux (Myung-Whun Chung/Orchestre Philharmonique de Radio France), CPE Bach (Bernard Labadie/Les Violons du Roy), Rautavaara’s Towards The Horizon (John Storgårds/Helsinki Philharmonic Orchestra), Shostakovich’s Concertos (Vasily Petrenko/Oslo Philharmonic Orchestra) as well as the complete Bach Cello Suites and Britten Cello Suites. Initially taught by his father, Truls Mørk continued his studies with Frans Helmerson, Heinrich Schiff and Natalia Schakowskaya.