pbryld:
Thank you for your interest. I am going to give you a detailed answer so hang with me on this.
First, my teacher taught me the philosophy of eclecticism. Succintly put, that means that you study what has been successfully done before, and then you adapt it to your own personal situation.
Learning how to play in the style of the 19th century pianists and composers is effectuated the same way. In this case, you have written sources, and you have recorded sources.
Above, I cite Kenneth Hamilton's book, "After The Golden Age," which extensively references arpeggiation and asynchronization. It includes a detailed quote from Claudio Arrau regarding how his teacher Martin Krause used to teach his students how to arpeggiate the music of his teacher who was Franz Liszt.
Then, I list Neal Peres Da Costa's book, “Off the Record," which contains extensive discussions of arpeggiation and asynchronization, along with rhythmic alteration and tempo modification. Dr. Peres da Costa has special symbols, embedded into the text of practically every page, which cross-reference dozens of recorded examples on the book's companion website.
If you don't want to go the Amazon.com route, both of these excellent texts can be obtained through your local library's Interlibrary Loan (ILL) program, for free.
In regards more recorded sources, I recommend first that you get Kenneth Caswell's piano roll recordings, "Debussy, The Composer As Pianist," and also "Ravel, The Composer As Pianist." The are playing their own stuff, so you can pretty much take everything that they do, literally.
When it comes to Chopin, the recordings of Moritz Rosenthal, Alfred Cortot, and Teresa Carreno are all excellent sources. Each one of their teachers was a teaching assistant of Chopin. You Tube is loaded with recordings of these artists.
The best recorded source for Brahms is Carl Friedberg's recording "The Brahms Schumann Tradition." Friedberg was a student of Clara Schumann, and he was personally coached at great length by Brahms himself. It is available through Marston records, and with the exception of the Kinderszenen, all of the selections are from live recitals at Juilliard where taught for 23 years unitl 1946.
Finally, there is the 6 CD box set "The Pupils Of Clara Schumann." These are recordings made by Fanny Davies, Adelina de Lara, and Ilona Ibenschutz. The de Lara recordings also include Brahms, as well as the Beethoven C Minor Variations (with arpeggiation).
Unfortunately, Pearl Records has withdrawn this great collection, so you will have to find some way to listen to it at your nearest university Fine Arts Library. Also, there are selected recordings from this set on You Tube, especially Fanny Davies' very first analog recording of the Schumann Concerto, which you can dowload from one of the comment links for just under $4.00. Davies was Clara Schumann's teaching assistant for twenty years!
After all of this, seek out other recordings and then let your ear and your own personal taste be your guide. That is the way everyone in the 19th century did it!
Finally, I leave you with the live recordings of Mieczyslaw Horszowski, who was a student of Theodore Leschetizky, whose piano teacher was Carl Czerny. Horszowski lived to be 100 (1993), and his playing is a great example of these techniques being utilized in modern times.
https://www.youtube.com/watch?