String Quartet in Aminor op.51 No.2 (弦乐四重奏，A小调，作品51号之二) String Quartet in C minor op.51 No.1 (弦乐四重奏，C小调，作品51号之一) String Quartet in B flat op.67 (弦乐四重奏，降B小调，作品67号) String quartet in f minor, Op.20/5 (F小调弦乐四重奏，作品20/5) String Quartet in A minor,op.51 no.2 String Quartet in C minor op. 51 No. 1 String Quartet in C minor,op.51 no.1 String quartet in B minor op. 33 no. 1 String Quartet in C minor,op.51 No.1 String Quartet in A minor op. 51 No. 2