1String Quartet No. 12 in Quarter-Tone System, Op. 90: I. Allegro energico
2String Quartet No. 12 in Quarter-Tone System, Op. 90: II. Andante cantabile
3String Quartet No. 12 in Quarter-Tone System, Op. 90: III. Allegro risoluto
4String Quartet No. 10 in Sixth-Tone System, Op. 80: I. Allegro energico
5String Quartet No. 10 in Sixth-Tone System, Op. 80: II. Andante cantabile
6String Quartet No. 10 in Sixth-Tone System, Op. 80: III. Allegro energico
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