I've been working a lot on articulation lately. Mostly, I have been trying to overcome some really bad habits that developed slowly over a couple of years. When I was a student in high school, my trumpet teacher (very well-respected, pm me if you want to know who) taught me to tongue with the "du" syllable. Double-t was "du-gu". I know that Arban and his successors abhorred such syllables, opting for a "tu-ku" instead. I feel like there are a number of other syllables that can be used, however. I found that "tee" was good for piccolo trumpet (in fact, in one of my pic excerpt books I wrote "tea time!") Also, I think "toe" can be good for low notes. What are some examples of syllables you use and more importantly what have you found in your teaching to be most effective for trumpet playing?