PSA:
If for some reason you need to authorize, or reauthorize, your Apple Music service in the Sonos app, AND you are using the iOS/iPadOS 18 Beta 4, this will NOT work. The authorization process between the Sonos and Apple Music apps is broken in the Beta OSes.
It works fine in iOS and iPadOS 17.x - same version of the Sonos app.
If for some reason you need to authorize, or reauthorize, your Apple Music service in the Sonos app, AND you are using the iOS/iPadOS 18 Beta 4, this will NOT work. The authorization process between the Sonos and Apple Music apps is broken in the Beta OSes.
It works fine in iOS and iPadOS 17.x - same version of the Sonos app.