Alfredo Casella's Serenata for small orchestra, Op. 46bis of 1930, is an orchestral arrangement of the Serenata that he composed three years earlier for clarinet, bassoon, trumpet, violin, and cello (Op. 46 proper, a work upon which the Musical Fund Society of Philadelphia bestowed its First Prize in 1928). The only significant difference is that the orchestral version is in five movements, while the original is in six; Casella omitted the second movement of the original when making the chamber orchestra version.

The Serenata hearkens back to the occasional serenades of the eighteenth century, with its concise dance movements and light, entertaining style; gracefulness, in true neo-Classical fashion, is here more important than cutting-edge musical narrative. The pieces in the Serenata are: 1. March, (2. Minuet, omitted in Op. 46bis), 3. Notturno, 4. Gavotte, 5. Cavatina, and 6. Finale (tarantella).

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