Angie Samaniego
Hello Imke and welcome!
I actually asked that question a couple of weeks ago and my coach advised that I could use it if it helped me, but I shouldn't use it a lot because we shouldn't rely on any external elements rather than our meditation and self-awareness to keeping the mind still. I used music for relaxation a few times and it made my sessions a lot easier. Then, I saw the point on my Coach's words and now I don't need any help from other sources but myself and the words of the guides.
Hope this information helps you!
Greetings from Colombia!!!
Lots of sabai feelings for you :)