Serenade in B flat major, K361, "Gran Partita" Serenade in E flat major for Strings,Op.6 Serenade in E flat major, K375 Prelude in A flat major, op. posth Serenade in E flat major K 375 Prelude in A flat major, op.posth. Prelude in D flat major, op.28 no.15 Prelude in A flat major, BWV 862 Prelude in A flat major,op.post. Prelude in A flat major,op.posth