Sveinn Eythorsson (Icelandic: Sveinn Eyþórsson; born 17 February 1964) is an Icelandic guitarist and software developer.

His parents were Sigurbjörg Sveinsdóttir, from Reykjavík and Eyþór Þorláksson from Hafnarfjörður.

[1][2][3] Sveinn has developed the information system School Archive used by many music schools in Iceland to keep track of their students.

Drawings by Jean Antoine Posocco.

Preliminary (first four strings) with accompaniment for the teacher.

Melodies by guitar pupils, grades 1 – 3, with accompaniment for the teacher.

ISBN 978-9935-446-65-7 [1203] The Mountain Stream.

Melodies with chords and bass.