What are the key differences between a symphony, an orchestra, and a band in terms of their composition and performance styles?

A symphony is a large-scale Classical Music composition typically played by an orchestra, which is a group of musicians playing various instruments. Orchestras are known for their diverse instrumentation and complex compositions. On the other hand, a band is a smaller group of musicians that typically play popular Music Genres and may have a more limited range of instruments. Bands often focus on simpler compositions and emphasize vocals and rhythm.