his output has formed the focus of festivals such as the 2014 Vale of Glamorgan Festival and New Music for New Age from The Washington Chorus. O'Regan's first full-length ballet score (Mata Hari, based on the life of Margaretha Zelle MacLeod), commissioned by the Dutch National Ballet with choreography by Ted Brandsen, opened on 6 February 2016 in Amsterdam. On 30 September 2016 Mata Hari was released in DVD and Blu-ray formats by EuroArts, distributed by Warner Classics; the ballet will be revived for a further run in October, 2017. In February 2017, O'Regan's first album of orchestral music, A Celestial Map of the Sky, performed by The Hallé under the direction of Sir Mark Elder and Jamie Phillips, was released on the NMC label. The album entered the British Official Charts at number seven in the Specialist Classical Chart and number 18 in the Classical Artist Albums Chart. In the same year he was elected both to an Honorary Fellowship of Pembroke College, Oxford, and to the board of Yaddo. In 2019, O'Regan's opera The Phoenix with a libretto by John Caird was premiered at the Houston Grand Opera. The story was derived from the life of Mozart’s librettist, Lorenzo Da Ponte. Patrick Summers conducted the opera with Thomas Hampson and Luca Pisaroni playing Da Ponte at different stages of his life. The designs were by David Farley with lighting by Michael Clarke and choreography by Tim Claydon. Tarik O'Regan was appointed Philharmonia Baroque Orchestra's first-ever Composer-in-Residence in 2021. In 2023, O'Regan was announced as one of the composers who would each create a brand new piece for the Coronation of Charles III and Camilla. Music Style O'Regan's music is mostly written in tonal, extended-tonal and modal languages (or a combination of all three), often with complicated rhythmic effects and dense textural variation. Influences In various radio and print interviews, O'Regan has stated that he "came to music quite late", mentioning the age of 13 as when he first was able to read music, and has listed five primary influences on his work: Renaissance vocal writing: from some of the repertoire performed by the college choirs at the Universities of Oxford and Cambridge where he was educated, although O'Regan describes himself as being "a pretty bad singer". The music of North Africa: from his own maternal heritage and time spent in Algeria and Morocco during his youth. British rock