Quartett in C sharp minor op.131 Quartet in C sharp minor op. 131 Quartet in C sharp minor,op.131 string quartet in c sharp minor,op.131 1-7. Quartet in C sharp minor op. 131 Quartett in A minor op.132 Quartett in B flat major op.130 5-11. Quartet in C sharp minor, op. 131 String Quartet in F sharp minor, op.121 Quartett in E flat major op.127