Don't see too much mention of what style people in the Hapkido forum learned under. It isn't perhaps all that important anyway. The different styles share many of their techniques. Still, I was wondering if there are any others here who studied Soong Moo Kwan Hapkido, either in Korea, under GM Yi, or one of his sons, in Korea or the USA? Actually, for that matter, he had many masters teaching throughout Korea. Some may have learned from one of them.