Guðrún Óskarsdóttir studied the piano at the Reykjavík College of music. There she also got to know the harpsichord and had her first lessons with Helga Ingólfsdóttir. For further studies she went to Holland and studied at the Sweelinck Conservatorium in Amsterdam with Anneke Uittenbosch and later with Jesper Böje Christensen at Scola Cantorum in Basel and with Francoise Lengellé in Paris. Guðrún is featured on numerous recordings and has appeared in recitals and concerts in Iceland and abroad. She is a member of Nordic Affect and Caput new music ensemble and she also performs with the Icelandic Symphonie Orchestra and the Icelandic Opera.