I have this one. I didn't research it, but if it's arranged by Gershwin... Hopefully they didn't edit it much. It didn't look like a chessy, watered down arrangement. I don't know why Tony Esposito is listed as the author. It has three positive reviews. The arrangments did seem kind of short, but I thought it was more advanced. https://www.amazon.com/Gershwin-Keyboard-Arranged-Composer-Piano/dp/0769259685/ref=sr_1_1?ie=UTF8&s=books&qid=1250560500&sr=1-1