Possibilities of harmonica (1st position)

Overblow is a technique allowing you to play all chromatic notes in 3 octaves on the single diatonic harmonica. Here I play in 1st position (the key of the harp, which is B). I'm using Suzuki Harpmaster, which is really nice for practicing all the techniques like bendings and vibrato. Microphone is AKG D310, Austrian production. If you have any questions, PM me.