We can confirm that the Lyrics feature is still being tested and this might be the reason why you're no longer able to see it. In this case, we'd recommend keeping your app up-to-date so that you don't miss when it becomes available to all users.
We appreciate you taking the time to share your feedback with us though and will make sure to pass it onto the right team, as we always strive to improve your experience.
Hope this helps. If anything else comes up, we're always a message away.
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“Music is the wine that fills the cup of silence.” - Robert Fripp