Music replay each time a open level is called

I have a persistent level with only one actor to play music, I play the music in a GameMode using the begin play event, each level uses this game mode.
I only play if “is playing” is false but each time I use OpenLevel the music replay.
What is the problem ?

Is ‘is playing’ default set to true? It should be in your case, and turn it off later.

Can you explain more ? When I click on the “Is Playing” node I have 0 parameter.

disregard what I said, is the music playing correctly?

The music plays correctly and loop correctly, but when I open a new level the music restart, it should not since the actor is in a persistent level.
During the “Open Level” the music stop apparently, but should not.