I read it like that:
a person standing in her room, singing, and the world changes around her,
opening up, bringing literally everything into her room and she gives everything out of her soul (grammar, sorry but understandable I hope?)
That's how I read that scarf. Perhaps it resonates with me as I started studying piano and opera singing at the University (actually Konservatorium) until my body (i.e. my hands) refused to behave properly. bc of that I can relate to that feeling, singing and the world opens up and you open yourself up.
But: I could be totally wrong.