a) No real plan if the provider does not directly provide it.
b) It’s shown when you select details on a song for from now playing.
No idea what c) is.
Data is get from the provider Symfonium just display it, it does not directly ask metadata sites for the data if the provider does not provide it
Symfonium does not directly scan tags, it can’t for all the remote providers.
Android does not support LYRICS via media store and Android 11+ breaks file access to files to easily find the lrc near the song. That would mean using SAF and asking the user to manually select each file one by one, mistakes and tons of support that I do not want to assume.