Betsy Jolas & Lejaren Hiller: String Quartets

Quatuor III "9 Etudes": I. Bowing

Quatuor III "9 Etudes": II. Vibrato

Quatuor III "9 Etudes": III. Aleatory Structures

Quatuor III "9 Etudes": IV. Trills and Bowed Tremolo

Quatuor III "9 Etudes": V. Harmonics

Quatuor III "9 Etudes": VI. Multiple Stops

Quatuor III "9 Etudes": VII. Aleatory Structures Around a Held C

Quatuor III "9 Etudes": VII. Pizzicati

Quatuor III "9 Etudes": IX. Summing Up

Quartet No. 6 for Strings: I. Arrabiato