Ercole de' Roberti: Concert, c. 1490
A musician is a person who plays or composes music. Musicians can be classified by their role in creating or performing music:
Musicians may also dance or produce choreography. The concept of the musician and the status of the musician in society varies from culture to culture.

The music industry is the industry that creates, performs, promotes, and preserves music.
The music industry is made up of:

A musical ensemble is a group of three or more musicians who gather to perform music. There are several denominations of ensembles according to their size and composition.