HREIDAR INGI THORSTEINSSON (b.1978) graduated from the department of musical education at the Reykjavík College of Music in 2001 and obtained his bachelor ́s degree in composition from the Iceland Academy of the Arts in 2007. In 2008 Thorsteinsson completed a final examination in vocal studies from The Reykjavík Academy of Singing and Vocal Arts and the following year he completed two postgraduate diplomas, in composition and in choral conducting, from JAMK University of Applied Science in Jyväskylä, Finland. Thorsteinsson then sought further education in Estonia, at the Estonian Academy of Music and Theatre, where he completed his master ́s degree in composition with distinction in 2011. He founded the choirs Ægisif in 2016 and Huldur in 2021 and has been the conductor of The Choir of Hamrahlíð College since 2017.