What is a Cabeletta?

A Cabeletta is indeed characterized as a fast display piece (aria) that creates an emphatic declaration and a dramatic exit. This form typically follows a slower introduction, where a character might express emotions or set the scene, and then transitions into the lively and brilliant Cabeletta section. This shift allows singers to showcase their vocal agility and technical prowess, often culminating in a powerful and memorable conclusion. The dramatic nature of the Cabeletta enhances the narrative of the opera or piece, emphasizing key moments for the characters involved.

In this context, the other options do not accurately describe a Cabeletta. A slow, lyrical aria that expresses deep emotions better fits the definition of an "aria" without the quick tempo and emphatic characteristics of a Cabeletta. An ensemble piece featuring multiple characters might involve various characters sharing the stage, but it lacks the distinct focus on a single singer's virtuosic display typical of a Cabeletta. Lastly, a choral work performed in celebration pertains to a collective performance rather than the individual spotlighting that defines the Cabeletta format.