Glenn, Wow, cool! I hadn't realized there's a 'Power Tracks Pro Audio' custom instrument patch map file available for the Yamaha Tyros. MANY thanks for providing the link. This terrific revelation, PT's ability to add vocal harmonies easily, as well as new version 10 features (including ASIO Support) make PT-10 imo, more than 'well worth' the modest $29 upgrade price. I'm definitely upgrading right away. - Scott