Why does the Melodist generate notes outside the “Melody Note Range” specified in the Melodist editor?
Band-in-a-Box will use notes outside of the specified range (within about an octave) so that a more natural melody line can be created. The intention is not to get Band-in-a-Box to stick precisely to the specified range. If you want, you can manually edit any of the notes that are created by the Melodist.