Jon Mostad (born 21 April 1942) is a composer from Fredrikstad, Norway. He received the Norwegian state three-year scholarship for artists from 1982 until 1984.
In his early compositions Mostad is moving from a linear-expressionist style to a more timbre-oriented line of thinking where both modernist and romantic music are inspiring his work. From around 1975 the timbre/harmonic aspect of his music becomes more related to the harmonic series. During the 80s and 90s he combines this with other types of modal and free compositional techniques, sometimes utilising modal techniques as well as more overtone-oriented harmonic spectra within the same composition.
At the same time he has also been experimenting with untraditional structuring of his material, both in works of one movement and in cyclical works. Many of Mostad's instrumental works as well as vocal music, are inspired by Judæo-Christian texts which often influence the structuring of the music. For instance in "And the light shines in darkness" a massive dark sounding layer with lots of rhythmical unrest gradually gets introduced to a lighter sounding chord with notes from the harmonic series.
Mostad has written chamber music, solo pieces for piano, guitar, organ and utilised electronics, both pre-recorded and live with interaction with live musicians, but his main focus has been orchestral and vocal music. His longest composition is the work "Were you there, when they crucified my Lord?" for choir, recitation, solo voices and orchestra.
The music of Jon Mostad has been played by leading orchestras in Norway (Oslo, Bergen, Trondheim...) as well as performed at Bergen International Festival, the Elverum Festival, Music Factory in Bergen and Dartington International Summer School in Totnes, England among other festivals. In 2010 he was featured composer of the Vinteriss festival in Østfold (a region in Norway). He has been represented at Nordic Music Days and has been played on radio in the Nordic countries, former Jugoslavia and England. His "2 psalms" for choir has been sung numerous times in Japan, England and Norway.
Mostad's music has also been performed by local amateur ensembles. Music ranging from small chamber pieces to the multimedia show Terje Vigen based on texts by Henrik Ibsen and theatrical music for Ibsen's Peer Gynt were written for local ensembles in Fredrikstad.