Sonata in E flat major BWV 1031 Sonata in B flat major K. 10 Sonata in E flat major K 193 Sonata in A flat major op. 110 Sonata in B flat major K. 15 Sonata in B flat major K. 281 Sonata in B flat major K. 333 Sonata in B flat major K. 551 Sonata in A flat major op. 26 Sonata in B flat major K. 570