SUB 30 diatonic harmonica. In order to play a chromatic scale on the normal 10 hole harmonica, you have to use the difficult overblow/overdraw techniques, which require harmonicas with very delicate reed setup. The new Suzuki UltraBend changes all that! Now you can get a chromatic scale by normal playing plus simple bending technique. With the SUB30, you can easily play phrases and music styles that you gave up on before, because you could not get some notes.