AAA에 따르면, "무덕 9년(626) 정월 10일에 조효손에게 아악을 바로잡게 한" 일이 있었다.
According to the AAA, there was a case where "I let Cho Hyo-son correct his ceremonial music on the 10th of New Year's Day, the 9th year of Mudeok (626)."