The method I posted sends the midi information to the harmonizer via the midi output connection of the keyboard, which I feed directly into my TC Helicon Harmony-M. I then output the Harmony-M back through the keyboard's Line In, which eliminates the use of mixer for the mic. I can set the effects on the Harmony-M, and the type of harmony, then combine it with any additional effects I wish to select from the keyboard, thereby providing a tremendous amount of variables to select from, which is all saved in a set-up registration. Everything is then outputted from the keyboard's audio outputs to the PA system(s)

Gary