Hi Donm I test the vocal harmonizer to see if the problem still exists and i selected the harmony setting Karaoke Girl and Speedy Mouse .By the karaoke Girl i hear my own voice to by Speedy mouse not.I think it is also importend wat mic is conecctet to the vocal harmonizer.I discoverd that it is also conectet with the left play of the keyboard then the voces changed.It is like a duet with a girl but the girls voice is louder then my one voice. I hope this information is helping. Wat other bugs where discoverd so i can test it.Greetings Roland