Korean brahman bells toll magnificent sound that would be a great vehicle which brings all beings to the sutras without lecturing mat and can lead them to the Land of Purity -Nirvana. The rating processes and their results of sound quality of the most beautiful Korean Brahman Bells of Sangwonsa, Bongduksa and Boshinkak have been presented in detail. This evaluation scheme is also a very effective measure in determining the beauty of sound not only of bells but also of any music.