A musician is someone who composes, conducts, or performs music. According to the United States Employment Service, "musician" is a general term used to designate a person who follows music as a profession. Musicians include songwriters, who write both music and lyrics for songs; conductors, who direct a musical performance; and performers, who perform for an audience. A music performer is generally either a singer (also known as a vocalist), who provides vocals, or an instrumentalist, who plays a musical instrument.