I first learned Beethoven’s Appassionata over a decade ago. After the music had grown rusty and I could no longer play it, I would occasionally play the first few measures and think, this is one of the most gorgeous pieces; I should work on it again. It is so passionate; the emotions just soar. So I decided to relearn it.
I recently decided to try to build a repertoire of pieces I had once played, and I started with the Liszt Un Sospiro. I love learning new pieces but find it a chore to maintain repertoire, so I never have much in my repertoire at any one time.