Recently, conversations trigger a rifling of my vast mental library of song lyrics, finds a match by subject or keyword, & plays it. since age 4, my recall of lyrics is just there. generally, i retain concepts over details. should i be worried?

I don't think so.: This is a little bit unusual, but lifelong tendency. EACH OF US is experiencing some mental effects from the strange times we're experiencing. All a bit nostalgic for the "safe old days". This might very well be your brain's way of processing unfolding events and helping you to integrate them. This is one of the great gifts of music. You're lucky (I hope) that the lyrics too are comforting.

Not necessarily: I am not sure that I fully understand what you are describing. But what Dr. Andrews mentioned certainly makes sense if this is one of the brains ways of self-comforting.

Agree with Dr. A: Try to find a use for your talent that may help you in your day to life and/or a professional career. Wish you good health!