1String Quartet No. 12 in Quarter-Tone System, Op. 90: I. Allegro energico4:25
2String Quartet No. 12 in Quarter-Tone System, Op. 90: II. Andante cantabile5:12
3String Quartet No. 12 in Quarter-Tone System, Op. 90: III. Allegro risoluto5:01
4String Quartet No. 10 in Sixth-Tone System, Op. 80: I. Allegro energico5:29
5String Quartet No. 10 in Sixth-Tone System, Op. 80: II. Andante cantabile5:49
6String Quartet No. 10 in Sixth-Tone System, Op. 80: III. Allegro energico6:30