Preparing Tomorrow's Leaders, One Black Belt at a Time! Master Cho’s Black Belt Academy offers classes that teach the style of Taekwondo supported by the American Taekwondo Association (ATA) is known as Songahm Taekwondo, a style specifically developed over a span of 20 years by Eternal Grand Master H.U. Lee to make it accessible to anyone willing to learn, and to truly reflect Taekwondo and the strength and beauty of its kicking techniques.