Pandora (or Spotify or other audio) won't play on iPhone 5 through Bluetooth

If you're expecting audio to come out of your Bluetooth headset (or other Bluetooth  pparatus) and it isn't, the simple fix right now would be to turn Airplane Mode on, then off again. This will "reboot" the wireless services, if you will, and once you re-establish the Bluetooth connection, all will be well.