Opus 21
Sonata for Flutes and Piano
Scoring: Piccolo/flute/alto flute and piano; alternative version for flute and piano.
Publisher: Musikk-Husets Forlag.
The 2010 anniversary catalogue dates publication of this work to 1978.
Musikk-Husets Forlag A/S — 2010 catalogue, printed page 7.
Bjørn Strandvold explains in the 2010 catalogue that the second movement is intended for alto flute and the third for piccolo; the sonata can also be played on standard flute throughout.
Bjørn Strandvold — 2010 catalogue, printed page 36.