Btw for a nice quote, I am reading Liszt: sonata in b minor by kenneth hamilton and it randomly tells you a lot about his form in the chapter: forms and formulae.
"For us musicians, Beethoven's work is the pillar of cloud and fire which guided the Israelites through the desert- a pillar of cloud to guide us by day, a pillar of fire to guide us by night, so that we may progress both day and night" His italics.
Now here were some works and what I would look for in these works:
Theme construction: Schubert Lieder, Beethoven, Chopin Sonata
Harmonic construction along with theme:
Liszt TEs, Beethoven, Rachmaninoff concerti, Schubert sonatas, Scriabin random works.
Textures (IE vocabulary):
Alkan Symphony & Concerto, Festin. Chopin Etudes, Liszt Etudes, Scriabin Etudes, I was thinking maybe even Barber sonata. I don't know, maybe Messiaen fanatics know- would Messiaen be a model for effects and textures?
Fugal/imitative development:
Bach Fugues, Brahms Miniatures
Variation development: Brahms miniatures, variations serieuses, Bach-Busoni Chaconne, Rachmaninoff Rhapsody.
Counterpoint: Godowsky Passacaglia, Brahms, Beethvoen, Mozart,
Large-scale structure: Brahms large works, Beethoven Large Works, Liszt Large Works, Other symphony, Brahms Chamber Music.
Variations for effects:
Experiments in polytonality, ie Liszt Harmonies du soir
Stretching form or surprising the audience when they expect something different
Dramatically change harmonic progression upon variation or repetition
Motivic development: Liszt Sonata, Beethoven, Chopin B-flat minor sonata
Further suggestions/areas?
My plan is to start off with early haydn and very short pieces of varying character and working my way up.