What are the key differences between an ensemble and an orchestra in terms of their composition, size, and performance styles?

An ensemble is a smaller group of musicians, typically ranging from a few to a dozen performers, who play together in various combinations. They often focus on a specific genre or style of music. On the other hand, an orchestra is a larger group of musicians, usually consisting of around 50 to 100 players, that includes strings, woodwinds, brass, and percussion instruments. Orchestras perform a wide range of Classical Music and have a more formal and structured performance style compared to ensembles.