Disc jockeys, also known as DJs, broadcast music over radio stations. They must ensure that commercials, interviews and commentary are delivered on time, per a schedule set by management. This career typically requires a strong personality and a clear voice. Aspiring DJs usually complete an associate's or bachelor's degree program in a field like radio broadcasting or journalism. Work experience is also important in this career field, and degree programs typically include internships to help students get experience at radio stations.