Just wondering if how many brass (esp. trom.) players know of and practice the art of doodul tonguing?? Tried to check online for a comprehensive guide, but alas, only references to Curtis Fox's book. For those who haven't heard of the technique,... "Doodul tonguing, a form of the legato double tongue, is a system which allows the tip of the tongue to remain in contact with the gum area behind the top front teeth during the "dul" part of the two syllable systm. This enable the attacks to become smooth and even, and makes an increase in playing velocity possible. The technique can be used in all registers, with any tempo, and at any dynamic level." It is used primarily because "One of the universal problems for all players of the trombone is timing - the coordination of the tongue and slide. From the beginning stages of development right up to the advanced level, trombone performers generally experience their greatest problem with the concept. And, as the musical demands of the player become more complex, the timing problems compound."