There are various words that can be used as synonyms for the term "band leader." Some of these include music director, conductor, orchestra leader, ensemble director, maestro, and lead musician. Each of these terms refers to a person who is responsible for leading and directing a group of musicians or an orchestra. A music director typically oversees the performance and arrangement of music, whereas an orchestra leader is responsible for leading a symphony orchestra. A conductor coordinates the various instruments in an ensemble, while an ensemble director oversees the development of an ensemble's repertoire. A maestro is a term of high esteem for an accomplished conductor or musician, and a lead musician is the primary musician in a band.