Le Van Tuan, a musician of traditional music from HCMC, Vietnam, created a music book of CROR music (CROR music is a self invented music form by the musician himself) containing 430 pages and measuring 1.2m in width, 1.6m in length, 0.28m in thickness and weighing 250kg. The book is placed on an iron stand covered with wood (1.3mX2.8m and 250kg weight). CROR has been received positively by International and Domestic audience.