1![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
String Quartet No. 12 in Quarter-Tone System, Op. 90: I. Allegro energico
2![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
String Quartet No. 12 in Quarter-Tone System, Op. 90: II. Andante cantabile
3![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
String Quartet No. 12 in Quarter-Tone System, Op. 90: III. Allegro risoluto
4![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
String Quartet No. 10 in Sixth-Tone System, Op. 80: I. Allegro energico
5![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
String Quartet No. 10 in Sixth-Tone System, Op. 80: II. Andante cantabile
6![](https://m.media-amazon.com/images/G/01/digital/music/player/web/EQ_accent.gif)
String Quartet No. 10 in Sixth-Tone System, Op. 80: III. Allegro energico
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