As a composer, Håkon works especially with developing the repertoire for double bass, but in recent years he has also received a number of commissions from ensembles and soloists. Among these are two string quartets, a double bass concerto for Oslo Sinfonietta, new music for Draumkvedet (The Dream Poem), a work for eight double basses for the bassists in the Norwegian Opera & Ballet and a piece for Ensemble Allegria and soloists.
From 2011, Håkon is a member of the Norwegian Composers' Association. The works have been published by NB notes. His works have been performed at the Ultima Festival, Nordic Music Days, Oslo Chamber Music Festival, Bergen Festival, Borealis Festival, Ilios Festival, Hardanger Music Festival, Warsaw Autumn, as well as at concerts in the USA, China, Japan, Germany, Finland , France, Poland, Switzerland and England.