There is a strange glitch that has been around for a while where there is a large chance that if you have any sounds in your device's audio file then one of 4 things could happen: 1: normal music stays playing 2: game music and the audio play at the same time 3: game music is replaced by audio 4: If you have an app like Groovepad then there is a chance that that overlay button touchboxes from that app could be put into the game and where you press in game coukd affect the audio slightly because of where the buttons in the other app would be.

Solution: Try to move or delete the audio from your device's audio file

Same here, it's interesting that this can even happen. I've even had it playing my watsapp voice messages