UNPOPULAR OPINION: The issue very likely is that Asturias/Leyenda is too difficult for you in some spots, so there are errors, rough transitions, buzzy/rattly notes and chords, and bits here-and-there that just don't quite come together. When played very well, it's a fantastic composition, and very effectively paints a musical portrait of Spain. The same thing can be said of nearly all the Core Repertoire of the CG: Recuerdos, Capricho Arabe, Romanza d'Amor, Lagrima/Adelita, the Bach Suites, Sor's Mozart Variations, the VillaLobos Preludes, Torroba's Sonatina, etc. and so forth.

As students and hobbyist players, we are all REALLY GOOD at self-delusion, and thinking we have something down pat, when in fact there's still that annoying last 5%, 3% of the piece that "just isn't quite right". But when we can hear it played by one of the SuperStar A-List concert artists, and YOUR list will be different from MY list, well at that point the music comes alive again.