I was wondering if anyone can help me. It's a known fact that Chopin was forever a perfectionist and his autographs would often contrast, as he was constantly changing pieces he composed. Therefore no two autograph's of the same piece are ever the same! However, I recently came across this wonderful recording of Op.9 No.2:-http://www.chopinproject.com/2009/06/02/nocturne-in-e-flat-op-9-no-2-wadditional-cadenzas/
Which is based upon a score of one of Chopin's students where Chopin himself had added extra embellishments and ornaments.
Also, in this Katsaris Masterclass:-http://www.youtube.com/watch?v=6KXHIJ3O-rw
Around the 11:23 mark he plays another melody on top of the girls playing. He goes onto say that it was an alternative melody that Chopin himself improvised once with one of his students, and that student wrote it down.
Are there anymore of these improvisations/alternative melodies around? Are there any editions of he works which include Ossai on these additional embellishments?