Olav Anton Thommessen
Olav Anton Thommessen (born 16 May 1946) is a Norwegian contemporary composer.
He is a son of the diplomat Knut Thommessen (né Knut Saenger), a grandson of the German gynecologist Hans Saenger and a great-grandson of the gynecologist Max Saenger. He trained in the United States, earning degrees from Westminster Choir College and Indiana University. He is a former professor of composition at the Norwegian Academy of Music, where he was employed in 1972. He is now retired.
Thommessen is a productive composer who utilizes a tonal language bordering on the radical while also harking back to classical roots. Through his compositional career, Thommessen has influenced the outlook on modern music through his career as a scholar and an advocate for dissemination of information on Norwegian contemporary music. Thommessen's list of works includes numerous symphonic works, chamber music pieces, and vocal music works. He has written several operas.
From 1972 onwards, Thommessen distinguished himself more and more as a composer through performances of his works at major festivals and with key orchestras: his work Some Sound was nominated for the 1972 ISCM World Music Days in London, Down-Up/Sunpiece saw a performance with the Oslo Philharmonic Orchestra in 1973 and Mutually was bestowed with the award Samtida Musiks Quality Prize and was premiered at the Bergen International Festival in 1973. Following this breakthrough, Thommessen received a number of commissions; Stabsarabesk, Banners for Music, Maldoror, The Secret Gospel; The Overtone and A Concert Chamber are all works that represent this compositional period, not to mention an early version of The Hermaphrodite, premiered at the Vadstena Academy in 1976. 
The early 80s saw Thommessen gradually employing quotes and well-known phrases as basis for some of his works. The initial works that would later constitute his full-length concert opera A Glass Bead Game saw the light of day during this period: From a Glass Bead Game featuring themes from Beethoven and Verdi – premiered by the Oslo Philharmonic Orchestra in 1980, Macrofantasy On Grieg's, 'Piano Concerto in a Minor', Op. 16 premiered by the Bergen Philharmonic Orchestra in 1981 and Beyond Neon performed by the Minnesota Symphony Orchestra in 1982. Through a Prism was penned in 1982. As composer in residence at the 1982 Bergen International Festival, Thommessen’s piano work EingeBACHt saw its premiere at the festival as did a performance of the final version of his opera The Hermaphodite – a work that was premiered earlier the same year by the Royal Swedish Opera in Stockholm. The same year also saw Thommessen composing the stage music for a version of Romeo and Juliet performed at the unveiling of the Norwegian Theatre’s new Oslo building, while The Emerald Tablet saw its premiere at the Høvikodden/Henie Onstad Kunstsenter and Gnostic Fragments as well as The Phantom of Light were commissioned by the Swedish National Concert Institute. 
During the latter half of the 80s, Thommessen composed a number of major works: the trumpet concerto The Second Creation, the opera The Duchess Dies, the viola concerto Near the Comet Head, the synthesizer concerto From Above as well as the organ and cello concerto Through a Prism. These works in turn led to Thommessen being bestowed with a number of awards: The Norwegian Critics’ Award (1987), the Wilhelm Hansens Family Endowment (1987), the Lindeman Prize (1989). Through a Prism earned Thommessen a 1989 Norwegian Society of Composers Work of the Year Award, a second prize at the 1990 International Rostrum of Composers as well as the 1990 Nordic Council Music Prize.
2005 saw the premiere of Thommessen’s concert opera A Glass Bead Game in the entirety. The work is made up of six individual orchestral works which when united constitutes a full-length concert opera: Prologue, Macrofantasy On Grieg's, 'Piano Concerto in a Minor', Op. 16, Beyond Neon, Choral Symphony over Beethoven’s Eight Symphony, Through a Prism and Aposteose. 
Recent Thommessen works includes Kristi Brud (2012), Tuba Mirum (2012), Felix Remix, String Quartet No. 4 (2014) and A symphonic scherzo for strings and orchestra (2015).
For more than four decades, Thommessen has been an advocate for artists’ rights and has frequently partaken in public debate; in particular defending the composers’ rights to rightful remuneration for performances of new works. Thommessen has also been active in stylistic and aesthetic discourse and has been viewed by some as a critic of non-modernist and tonal music. In addition public debate, his stance on this matter has also led to compositional output by third parties: a 2006 letter he wrote to the composer Marcus Paus was later utilized as the libretto for Paus’ opera monologue The Teacher Who Was Not To Be (2013). Thommessen was later identified by Paus as the previously anonymous librettist. 
Thommessen has been a board member of Ny Musikk – the Norwegian section of the ISCM, the Norwegian Society of Composers, the National Music Council and was instrumental in the foundation of the Music Information Centre Norway as well as serving as the organization’s Chairman of the Board from 1979 to 1985.
- Some Sound for choir and orchestra, op. 8, 1971
- “Down-Up/Sunpiece” for orchestra, op. 13, 1972–73
- “Mutually” for two voices and instruments, op. 14, 1973
- Stabsarabesk for wind instruments, op. 15, 1974
- The Hermaphrodite , a ballet opera, op. 18, 1970/80
- Stabat mater speciosa for choir, op. 28, 1977
- Banners for Music for choir and orchestra, op. 32, 1978
- Melologer og monodramaer. En ordløs kammeropera, op. 32, no. 2, 1979/82
- The Second Creation. An orchestral drama for trumpets, op. 32 nr. 4, 1988
- A Glass Bead Game op. 34 nr. 2, 1979–82
- Ekko av et ekko op. 36 nr. 2, 1980
- Macrofantasy On Grieg's, 'Piano Concerto in a Minor', op. 39 nr. 1, 1980
- Beyond Neon. Post-commercial Sound Sculptures for horn and symphony orchestra, op. 41 1980
- Through a Prism A Double Concerto for cello, organd and orchestra, op. 44 nr. 1, 1982/83
- EingeBACHt. InnBACHt parafrase over Toccata in G-major, first movement for piano, op. 47 nr. 1, 1984
- L'éclat approchant for synthesizer and chamber orhcestra, op. 52 nr. 1, 1986
- The Duchess Dies, op. 56 nr. 1, 1987
- The Phantom of Light. A Miniature Concerto for cello and two wind quintets, op. 62 nr. 1, 1990
- Edda-Da. Monodrama op. 63a, 1991
- Near the Comet Head, op. 64 nr. 4, 1993–94
- Kassandra op. 69, 1996
- Music for Vandals, op. 76, 1998
- Corelli Machine op. 82, 2002
- Veslemøy synsk – en GRIEGsk musi-collage over Arne Garborgs HAUGTUSSA for mezzosopran og klaver, 2007
- Motett over Wergeland (2008)
- Smykke eller saga (2009)
- Kristi Brud (2012)
- Tuba Mirum (2012)
- Felix Remix, strykekvartett nr. 4 (2014)
- A symphonic scherzo for strings and orchestra (2015)
- Purpose: For symphonic wind orchestra (2015)
- Bjørn Sagstad, Ila Brass Band, Klang (!) (2012)
- Ernst Simon Glaser, Zvezdochka in orbit (2012)
- Staff Band of the Norwegian Armed Forces, A Tribute to the Northern Winds (2011)
- Veslemøy synsk (2011)
- The Oslo Philharmonic Orchestra, Peter Herresthal, Bull's Eye ; Please accept my ears ; Cantabile (2006)
- Corelli Machine (2006)
- Einar Henning Smebye, Guri Egge, Songs from the Last Century (2006)
- Christian Eggen, Oslo Sinfonietta, Norges Musikkhistorie - Bind 5 (2001)
- Kyberia, Navigations (2000)
- Peter Herresthal, Partita für Paul 1. sats (1998)
- Peter Herresthal, Please Accept my Ears! (1998)
- Jeg er flerspors - variasjoner over Olav Anton Thommessen (1998)
- Håkon Austbø, Juni Dahr, Edda-Da (1995)
- Oslo Sinfonietta (1993)
- Gaute Vikdal, Skygger (1992)
- Frode Thorsen (1991)
- Ensemble K 4 Live at Henie-onstad Art Center (1990)
- Frantisek Veselka, New Norwegian Violin Music, Vol.II (1990)
- Frantisek Veselka, New Norwegian Violin Music, Vol.I (1990)
- The Oslo Philharmonic Orchestra, A Glass bead from above (1990)
- Jeunesses Musicales World Orchestra, Scandinavian Tour 1988 (1988)
- Geir Henning Braaten, Norwegian Pianorama (1984)
- ”Nu er jeg beskeden. Og mer enn det.” Fra Tyskland til Norge i 1934
- "Bio from MIC Music Information Centre Norway". listento.no. Retrieved 2016-12-07.
- "Bio from Music Norway". musicnorway.no. Retrieved 2016-12-07.
- "Bio from The Society of Norwegian Composers". komponist.no. Retrieved 2016-12-07.
- Ibsen, Alexander Z. (11 October 2013). "Brøt med klisjeene". Minerva.
- Paus, Marcus (3 March 2015). "En 'riktig' stil?". Ballade.
- Olav Anton Thommessen page from Music Information Centre Norway site
- Olav Anton Thommessen biography from Music Information Centre Norway site
- List of Works supplied by the National Library of Norway