I read several posts, that it should be possible to listen to internet radio stations from TuneIn in Apple Music (e.g. <https://www.audioxpress.com/news/tunein-and-apple-bring-the-world-s-radio-stations-to-apple-music-and-all-siri-enabled-devices>). But It does not work for me - neither Siri (language: German) nor typed search for radio stations yields any result. 

My question: how can I listen to internet radio stations (e.g. [hr3](https://www.hr3.de/index.html), [srf3](https://www.srf.ch/radio-srf-3), ...) using Music on iOS 13? I have an Apple Music subscription.

If it is relevant: I am in Switzerland.