I have come to the conclusion, after much work on Pierne’s Impromptu-Caprice, that there are pieces one must learn as a student, before one realizes just how hard they really are! And there are those that are so much more doable if you have at least learned the notes while young. When older, it is so much harder to learn certain kinds of things from scratch, and that includes, it seems, memorizing complicated pedal passages.
Such pieces include:
Pescetti Sonata
Debussy Danses, Clair de Lune
Impromptu-Caprice
Mozart Concerto
Britten Suite
Salzedo Flight, Ballade
Handel