I started to do flutter tongue today after practicing these tips!!!! 🙂 🙂 🙂 Maybe I’m wrong, but I just discovered 2 things while doing this: I loosened up on embouchure a little bit, allowed the reed to flutter more freely and it seems like the lips also come into play? This may sound funny (I’m not always good with words on the cpu) but I took the MP out of my mouth and put my index finger on the tip of my teeth and took notice of what’s going on—and if SEEMS/FEELS like the lips are vibrating when I flutter with my tongue towards the front v.s. the back of the mouth. This seemed to help me. If my embouchure was too tight then it wasn’t no where near as loose and free to let the flutter happen. I was doing it on the G note and some on A and natural F notes, not for very long–about 5-6 seconds but it was DEFINATELY flutter tongue!