String quartet in B-flat major, G 160 string quartet in b flat major, k. 458 String quartet in E-flat major, G 236 String Quartet in E flat major, Op.127 String Quartet in E flat major, op.109 String quartet No.13 in B-flat major, op.130 String quartet no. 13 in B-flat major, op. 130 String quartet No.9 in E flat major, op.117 String quartet no. 12 in E-flat major, op. 127 String quartet no. 6 in B-flat major, op. 18/6