Double tonguing

thumb|400px|right|[[Rafael Mendez double tonguing]]Double tonguing is a technique used in trumpet playing which enables the trumpet player to tongue very rapidly. It is performed by using a normal articulation with the tip of the tongue alternated with tonguing with the back of the tongue. Bouncing the tongue back and forth between these two different positions produces some variant of "tu ku tu ku" or "dah gah dah gah," depending on what articulation style and vowel sound is used.