In a particular episode in The Wonder Years, the adult Kevin reminiscences about the pursuits we had given up when we were young simply because we were too lazy, or our developing ego - always ever so sensitive - was affronted. He recounts how he stopped taking piano lessons from Mrs. Carples mainly because he felt he could never attain Ronald Hirschmuller's expertise in Pachelbel's Canon in D major. He practiced sincerely for a couple of weeks only to discover that Hirschmuller was supposed to play the same composition too. The discovery stymied his own performance during the rehearsal, and he stayed away from the piano recital. The scene towards the end of the episode which has stayed with me was Kevin standing outside Mrs. Carples' lighted window as Canon drifted through the evening air. He slowly turned his bicycle round, and went home while his older avatar said, "I can never forget that evening... and sadly enough I don't know how to play that tune anymore."
Since then, Pachelbel's Canon has been the epitome of sadness for me; every time I listen to it, it reminds me of my regrets, all the missed opportunities, all the failures.
We have learnt and felt new tunes since, but we hope we could still remember playing "Pachelbel's Canon in D Major".