I don't talk to myself, I'm almost always listening to podcasts, so other people are talking to me. Sometimes I laugh out loud.
Whenever I run out of podcast and have to turn to music, I listen to the only music I store permanently on my mp3 player, which is Bach's Goldberg Variations, Glenn Gould (his iconic original recording: 70s?). I can't help singing along with that -- and neither can he, he is quite audible at some points in the recording