I didn’t have much experience listening to the radio, but my parents loved listening to music on the car radio when they were driving. The music in the car radio is often light and rhythmic, and the singer’s voice can make me feel comfortable but not sleepy.
The last time I heard the radio was one the taxi. It’s a very famous piano song, named Moonlight (Suite Bergamasque L.75:III). The author is Debussy who created the modern “Impressionism” music style (This music style is full of fantasy color.)