the ironic timing of a song on the radio that somehow verifies the moment and/or emotion... also, when you talk about a specific musician and their piece starts playing on the radio... or when you sing a song at work, get in the car and that very song is on the radio. Has to be an unintentional playing of the song. Any kind of radio or auto-playing source.
When I was mad at my bf, the song HEARTBREAKER came on the radio. Whoa. Talk about radio karma.
I was singing PROUD MARY all day, and kid you not! It was on KPAK when I got in my car! Total radio karma!