String Quintets in E flat major,KV 614 String quintet in E flat major Op. 4 String Quartet in B flat major,op.67 String Quartet in E flat major,K.171 String Quintet in E flat major op. 97 String quartet in B-flat major, G 160 String quartet in E-flat major, G 236 String Quartet in B flat major,Op String Quartet in E flat major,K.428 String Quartet in E flat major,Op