I'm listening to several recordings of Chopin Etude in Ab, Op. 25, No. 1 on Grooveshark. The most notable have been by Roustem Saitkoulov, Maurizio Pollini, and Vladimir Horowitz. I knew ahead of time I'd love the Pollini and Horowitz performances, but I hadn't yet heard of Saitkoulov. There's something extra-special about his; not sure what it is I like so much, but I'm hooked! :)