I'm sure this has been posted before, but I don't have the time right now to search it and this problem may apply specifically to me. I've been trying to learn double tounging for about a 6 month period now and I just can not get it to work for me. I know this is sac-religious when it comes to down to trumpet playing, but Arban's method just isn't working for me. I don't think my "ku"/"kee" is strong enough and I can't get it sound correct. It sounds like my tounge it working really hard, but I'm not really. The attack sounds very muddy and unorganized, but I've done every exercise that J.B. gives us in that section of the book and it just will not clear you for me. Do you have any suggestion for clarifying my attack or simply changing something about the way I approach it all together. I am using Arban you know. I don't know of a better way to go about it. Can you help me Mr. Laureano?