Music in a trigger box with background music

Hi, thanks a lot for your time and your help!

I have done this,

It’s wrong but I don’t know , I think I still have to put more effort to understand blueprints, because I know that if I remove musicplayer from my estructure, it gives me an error, but don’t know how to solve.
Very grateful, though! I’m going to keep on reading your answer to figure it out.