Not only that your device will poll for your location, but even if you have your location turned off (or no functional GPS at all), with BT enabled, Google will

Not only that your device will poll for your location, but even if you have your location turned off (or no functional GPS at all), with BT enabled, Google will have your location from all the other people's phones around you. Basically, you can't listen to music and have your location hidden from Google at the same time.