Ingólfur Vilhjálmsson studied clarinet in Amsterdam with Herman Braune, Harmen de Boer and on bass clarinet with Harry Sparnaay and Eric van Deuren. He has a great preference for the bass clarinet which he performs regularly also as a solo instrument. He received a scholarship as a member of the Ensemble Modern Academy 2006-2007.
He is a member of Adapter Ensemble and has worked with many composers of his generation and given concerts in Germany, Holland, Finland and Iceland, including festivals like MärzMusik (Berlin), Invention (Berlin), Dark Music Days, Frum- (Reykjavík) and Darmstädter Ferienkurse für Neue Musik. Ingólfur has worked with known composers such as Hosokawa and with Lachenmann on his avantgarde landmark piece Dal niente. His playing has been recorded by the WDR, The Icelandic Radio, SWR and the Hessische Rundfunk. Ingólfur recorded the CD "Dualism" with percussionist Tobias Guttmann on the ITM label in 2008.