Marius Hesby is a trombonist in the Royal Norwegian Navy Band in Horten. He studied at the Norwegian Academy of Music under the auspices of Professor Ingemar Roos, graduating in 2001. Hesby has been a soloist with the Oslo Philharmonic Orchestra, Bergen Philharmonic Orchestra, Trondheim Symphony Orchestra and the Norwegian Radio Orchestra. During 2002–2004 he was a feature soloist as part of the Arts Council of Norway’s ‘Rikskonsertene’. From 2009 to 2012 he was employed as a soloist in the Norwegian Armed Forces and from 2012 to 2014 he received the ‘Work grant for younger and newly established artists’ from the government-funded Arts Council Norway. Hesby has commissioned works from a number of Norwegian composers, including Arne Nordheim, Jon Øivind Ness, Ørjan Matre and Mark Adderley.