More than 50%.

The pass rate for the jazz drum exam at the China Conservatory of Music has not been announced, but according to surveys, it is over 50%.

The drum set originated in the United States. It is a set of drum-based combined percussion instruments played by one person. It was originally designed for jazz accompaniment. The word "Jazz" does not refer to the title of the British royal family, but the name of an early African American musician, whose full name was Jazz Bob Brown.