Gísli Magnússon is a composer and music theory teacher from Reykajvík, Iceland. He began his music education at the age of 6 and attended piano lessons from the age of 8. From 2010-2013, he studied composition at the Iceland Academy of the Arts, first with Gunnar Andreas Kristinsson and later with Hróðmar Ingi Sigurbjörnsson and Atli Ingólfsson. In 2016 he finished his master's studies at the Conservatorium van Amsterdam where his main teachers were Joël Bons, Willem Jeths and Wim Henderickx.
Besides his studies, Gísli has participated in various festivals and courses, including Dark Music Days, Ung Nordik Musik and Musiikin aika in Viitasaari, Finland, were he participated in a composition course of Kaija Saariaho.
In his music, Gísli frequently seeks inspiration in the nature of his home country and often creates clear and direct depictions of natural phenomena in tones. His compositions have been performed by various musicians and ensembles such as Duo Harpverk (IS), Söngsveitin Fílharmónía (IS), Ensemble neoN (NO), Score Collective (NL), Elja Ensemble (IS), Sjøforsvarets musikkorps (NO), South Iceland Chamber Choir (IS), Uusinta Ensemble (FI) and Iceland Symphony Orchestra (IS).
Gísli currently lives in Iceland where he works as a composer and music theory teacher.