Why does this pop up happen every time Bluetooth headphones connect?

Hey there,

there are some steps you can try it to solve this issue:

First, you will want to try disabling the handoff feature. You will need to:

1. Go into Settings.
2. Click on General.
3. Select Airplay and Handoff.
4. Toggle Handoff to ‘OFF’.

Switching this feature off can aid in the removal of your iPhone’s memory that you had played music on your phone.

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Disabling Siri Suggestion is another way to get iTunes to stop popping up. To do this, you need to:

1. Go into Settings and select Siri & Search.
2. You will see options for Suggestions in Search, Suggestions in Look Up, and Suggestions on Lock Screen. Switch them all off.

If this does not work, then your next move will be to Delete Music, then reinstall the app.

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Did you accidentally press a button on your headphones that enables automatic play? Is there a headphones controller that might not be working properly? Either of these things can cause iTunes or Apple Music to improperly pop up when you connect your Bluetooth headphones..

Your headphones themselves might be flawed. 

Unfortunately, in some cases, users have to replace their headphones in order to resolve this issue. 

Defects in the headphones have been named as the culprit for this issue before, so it is best to check your headphones before trying any more complex methods.

if none of this steps solve this issue you should to Contact Apple Support