I have the book that contains the Symphony, Concerto, Aesop's Feast, and Saltare(although it's not hard I like this piece). It's pulished by Dover, and I'm hoping that this book isn't representative of the quality they usually publish music because in some parts it's very sloppily done, some notes are missing stems. Well if you're honestly about to start Festin then I'll give you ample warning-this is a really hard piece. Although It's not hard anymore, the first few days of trying to play the 15th variation, and the section with all the appoggiaturas is torture. The repeated notes in the right hand in the second variation are a pain too, I'm not sure that most people that perform this piece actually repeat the notes, instead just tie them together? Hmph.