The Bogd Khan Palace Museum's collection now includes rare sutras, or Buddhist texts, featuring Mongolian melodic symbols. These melodic symbols can be translated as modern musical notes.  
Scholars say that these sutras were read by monks, as musical compositions would be sung. The sutras and their symbols were used in ancient times, and the author and origin are unknown. They were used when Tibetan Buddhism flourished in Mongolia, before it was dismantled during the 1937 repression. In order to restore and understand the unique melodic note sutras, cultural institutes in Mongolia have started doing research on their origin and collecting similar sutras.
There only around five collectors who are familiar with ancient Mongolian melody symbols. Scholars are now working to discover how the ancient musical notes were read from the sutras in an effort to protect this cultural heritage.
Scholars believe that if these sutras can be restored, they will develop a greater understanding of how they were used in Buddhist traditions. The working group dedicated to the restoration and study of the sutras has set a goal to create an “information fund” to improve the safe storage of the rare texts.