String Quartet in F sharp minor, op.121 String Quartet in C sharp minor,Op.131 String quartet No.7 in F sharp minor, op.108 String Quartet in C sharp minor,Op String quartet no. 14 in C sharp minor, op. 131 String quartet no. 14 in C-sharp minor, op. 131 String quartets No 14 in C sharp minor, Op. 131 String Quartet no.7 in F sharp minor,op.108 5-11. Quartet in C sharp minor, op. 131 String quartet No.14 in F sharp major, op.142