Hello Jazzman, yes you can control with the mouth piece, vibrato, soft and hard attack. You can also shut the breath controller off and use it as a normal midi controller. The Monsters of Melodica will be releasing a new video in September using the Midi Melodion with a Ferofish B4000 midi module for a Hammond organ sound. I also used it on some classic synthesizer effects as well. The one I purchased was never used and it works great.
Hope this answers your question.