String quartet op. 6, 1, D minor String quartet No. 2 in D minor String quartet op. 14 in F major String quartet op. 6, 2, a flat major string Quartet No.2 in G minor String Quartet No.1 in D minor String Quartet No.2 in D minor String Quartet No.4 in C minor String quartet op. 6, 1 String Quartet Op.18 No.4 in C minor