PCR Factory Preset Memory Set Package for No.A to F : General SET For Product(s): PCR-1 / PCR-30 / PCR-50 / PCR-80 / PCR-A30 / PCR-M1 / PCR-M30 / PCR-M50 / PCR-M80 GEN_A.mid through GEN_F.mid are general-purpose memory sets. Use them in situations such as when you intend to use your application to make message assignments. For Operating System(s): MacOSX / MacOS / WindowsVista / WindowsXP / Windows2000 / WindowsMe