Tnicoson, I can't thank you enough for doing the additional research and digging into this deeply and for Moh.Ali Ahmed's post to further advance understanding of this subject. I think this will help a lot of people who use casio equip and have scratched their heads on the confusion of midi data translation etc., I'm still trying to wrap my head around why the change depending on mode but to borrow a phrase I learned in school...."we don't want to design it here!". Thanks Again!!!!!!