Grandmasters Grandmaster Song, Jung Soo and wife, Grandmaster and wife, and Highland Park Chapter Instructors . Dallas, Texas OHTC Chapter, Dallas, Texas, 1999-2002. OHTC Master and Students Dallas, Texas Chapter. Grandmaster Song and students. OHTC's 25th Anniversary. Celebration of the 25th Anniversary of OHTC in the United States. OHTC Master and Students Grandmaster Song and Students, Plano, Texas.