One of my coolest radio-related experiences happened just a few months ago, when, churning through FM stations in my car, I encountered a country-inflected male voice singing "Fast Car," the Tracy Chapman song. Rolling Stone dubbed "Fast Car" the 168th best song of all time. It has audiophile cred because its simple sonics (predominantly voice and acoustic guitar) and good engineering made it an important test track, used, eg, by Harman for listening tests and by others for assessing compression artifacts in MP3s.