As a Tang Soo Do practitioner, the Chil Sung forms form part of our syllabus. They were introduced in the mid 80s by Hwang Kee. However, many TSD groups chose not to teach them and claimed the technical content wasn't very practical. I definitely feel that they are valid and have some practical techniques in there. This video is an example of Chil Sung Sah Ro (number 4). I'm posting it to get people's opinions. I'll try and put up some videos over the next few days.
This forum is dedicated to an exchange of ideas relating to the practical application of the forms of Korean systems such as Taekwondo, Tang Soo Do etc. Increase your understanding of forms whilst helping others to do the same.