I’m trying to make it so when you pause the game the audio starts and when you unpause it the music stops without overlapping
this is my blueprint right now but it doesn’t play the music at all
I assume you know, that you snipped can never work because you don’t have an exec going in from an event? 
In that case, if play and stop music don’t work, that might be because you paused the game. This also pauses delay nodes for example, so it might be that play/stop are also affected.
A simple (though maybe a bit hacky) workaround would be to use a menu animation instead and play your music in there. You just need to call the PlayAnimation function in the construct event. If you want your music to loop add the OnAnimationFinish event and call PlayAnimation there as well. When your widget gets removed the animation (and music) should automatically stop.