I recently updated my Chromecast to a Nokia 8000 android TV (with Chromecast integrated).
We cannot cast to Netflix unless we log in in the TV app. We used to just cast from chromecast, as we all (3 people) use different accounts, not profiles. Is there a way to cast without singing in?
Not sure what version you have but the one I have doesn't require any singing, it just works. Thank god because I have a horrible voice.
As far as I know, you really need to be hitting a high A# to correctly stream it. Maybe your harmonies are off? Try hiring a professional vocal coach.
Get a singing coach
Unfortunately not, it's Netflix who decided you have to sign in. The way they implemented casting is if you're casting to a smart TV, it will specifically call the Netflix app, which unfortunately requires the same account to be signed in on both the phone and TV. You can try to complain to Netflix but they've ignored this issue for years.