Please help me identify this piece...I've been trying for 11 years!

[lakellie]

Hi everybody,

I have a Yamaha Clavinova that has 50 preset songs. We got it when I was around 8 years old, and I have been madly in love with this one piece on there ever since. The piano did not come with a list of songs and does not match up with the "50 Piano Greats" list that is available online through Yamaha. 2 previous piano teachers have not been able to identify the piece. I have hit a dead end and after 11 years I really want to know the name/composer!

I recorded a bit of the piece on my cell phone (sorry for the poor sound quality) and have included the files below..please give it a listen and provide any insight possible!! Thanks 

[mikey6]

It's the 4th (last) movt of Weber's piano sonata in cmaj op.24
Brahms made an study out of it as well.

[mwsc042]

Not to mention Leopold Godowsky's superhuman but giddily vibrant 1903 arrangement