A vocal coach (also known as voice coach, though this term generally applies to those working with speech and communication rather than singing) is a music teacher who instructs singers on how to improve their singing technique, take care of and develop their voice, and prepare for the performance of a song or other work. Vocal coaches may give private music lessons or group workshops or masterclasses to singers. They may also coach singers who are rehearsing on stage, or who are singing during a recording session. Vocal coaches are used in both Classical music and in popular music styles such as rock and gospel. While some vocal coaches provide a range of instruction on singing techniques, others specialize in areas such as breathing techniques or diction and pronunciation.