Original tekst: Mogens Winkel Holm. Mogens Winkel Holm. Sonata For Four Opera Singers Op.29. Vocal Score. Sheet Music. SOP. ALTO. TEN. BASS.
Oversættelse: Sonate for fire operasangere Op.29. Korpartitur. Noder. Soprano, Alto, Tenor, Bass, Ensemble. HØJ. --.