Startup Idea : Bluetooth one to one personal communicator app

While I'm Jogging or Biking with a partner, I like to listen to music to motivate my exercise. Unfortunately, if I am with a partner or friend having headphones on also limits any conversation we could have. It would be great if we could play our personal music (Pandora, Spotify, etc.) and have a one on one voice connection to each other over blue-tooth while we are jogging or biking. Our personal voice connection would not mute the music, simply lower the volume a bit while the other person is talking similar to how maps plays audio turn by turn directions.This could also be used on a Bus, Subway, or Airplane where many people use headphones to pass the time an reduce the background noise. You might also be sitting a few rows away from your friend or partner and could still chat with one another.