 You're listening to the most listened to artists of the 70s at number 22 on our special countdown, Marvin Gaye. His song, Let's Get It On. This is Casey Kasem on American Top 40 in Hollywood. Here now at number 21 is the school teacher from Black Mountain, North Carolina, who earned her bachelor's degree by the time she was 19 years old. Her grades were so high in the public schools of Washington, D.C., that she won a scholarship to Howard University, where she majored in music education.