String quartets NO.12 in E flat major op.127 String quartet no. 12 in E-flat major, op. 127 String quartet No. 12 in E-flat major op. 127 String quartet No.12 in D flat major, op.133 String quartets No.3 in B flat major,op.67 String quartet No.9 in E flat major, op.117 String Quartet No.12 in D-flat major,op.133 String quartet No.5 in B flat major, op.92 String quartet no. 12 in E flat, op. 127 String Quartet No.12 in E flat Op.127