String quartet in E-flat major, G 236 String quartet in B-flat major, G 160 String Quartet in E flat major,K.428 String Quartet in B flat major,Op.130 String Quartet in B flat major,Op String Quartet in E flat major,Op String Quartet in B flat major,op.67 String Quartet in B flat major op. 67 String Quartet in B flat major,K.159 String Quartet in B flat major,K.172