single

The blade of the tongue is the front of the tongue, just behind the tip. This part of the tongue is used for tongue blocking an octave and for standard single-hole tongue blocking. When performing an octave, your lips surround four holes and with a very light tough, the natural convex shape of the blade of your tongue covers the middle two holes (if you press your tongue on the face of the harmonica too hard you’ll block all four holes, so a light touch is important). continue reading...