Duo for violin and viola in B flat major, KV 424 Duo for violin and viola in G major, KV 423 Duo for violin and viola in G major, K423 Duo for Violin & Viola in B flat,K 424 Rondo for violin and orchestra in B flat major, K. 269 Trio for violin, horn and piano in E flat major, op. 40 Sonata for piano and violin in B flat major, K.454 Sonata for violin and piano in E flat major op. 18 Concerto for violin and strings in B flat major, RV378R Sonata for piano and violin in E flat major, K.481