Thanks for your response. My guess is that it is an error by Ketron. The patchmap was obtained from PG. My knowledge of Midi in general is very limited. I did read on a Ketron SD2 review the writer mentions that PRESETS are just a "Greatest Hits" set of patches. "Or it could be GM2 specs coming into play"....That makes sense to me. I need to do some more studying on Control Changes, Program Changes & such. Thanks for your help.