Concerto No.6 in B flat major,KV 238 Concerto no.1 in B flat major, K.207 Concerto No.6 in B flat major, HWV 294 Concerto no.2 in B flat major,op.19 concerto no.1 in B flat minor, op.23 Concerto No.6 in B flat major,BWV 1051 Concerto no.6 in B flat major BWV 1051 Concerto no. 6 in B flat major, BWV 1051 Concerto no. 26 in B flat major G121 Concerto no.15 in B flat major,K.450