String Quartet No. 1 in B flat minor Op. 30 (1979): I. Allegro moderato

String Quartet No. 1 in B flat minor Op. 30 (1979): III. Adagio

String Quartet No. 1 in B flat minor Op. 30 (1979): IV. Largo: Allegro con moto

String Quartet No. 1 in B flat minor Op. 30 (1979): II. Presto e feroce