A musician is a person who composes, conducts, or performs music. According to the United States Employment Service, "musician" is a general term used to designate one who follows music as a profession. Musicians include songwriters who write both music and lyrics for songs, conductors who direct a musical performance, or performers who perform for an audience. A music performer is generally either a singer who provides vocals or an instrumentalist who plays a musical instrument. Musicians may perform on their own or as part of a group, band or orchestra. Musicians specialize in a musical style, and some musicians play in a variety of different styles depending on cultures and background. A musician who records and releases music can be known as a recording artist.