YouTube Music would be great, but there's no official API for third-party apps. Only unofficial libraries that scrape the web interface – not something I'd want to build an app on. Too fragile and could break anytime.

Interesting about Australia – sounds like the social media ban for under-16s now includes YouTube, but YouTube Music as a pure streaming service should be separate. The ban targets social platforms with feeds and interactions. Might be worth checking if YouTube Music specifically falls under it or if the device lockdown is catching it by accident.