Second quartetto in E flat major, K. 493 Piano quartet in E flat major, KV 493 Piano quartet No. 2 in E flat major, KV 493 String quartet no. 5 in E-flat major, op. 44/3 String Quartet in E flat major,K.428 Piano quartet in E flat major op.44 Piano quartet in E flat major op.47 String Quartet in B flat major,K.159 String Quartet in B flat major,Op.103 String Quartet in E flat major, op.109