Music app to share my own music with my girlfriend

So I am a music producer and I create music that isn't made to be shared with the world. I recently got together with a woman and I wanted to create music with her in mind. <br>It would be cool if I could just create an app that allows the music I create in pro tools to be shared with her in an ad free environment. Not even sure if there is already an app like this out there. <br>Just an app that she could sign into, and the music I have create specifically for her would be there for her to stream. <br>Any thoughts?