Training of baritone should strictly follow the objectivism of the vocality teaching preventing the popular disease of the "extrusion" in baritone.

The writer found out the tunes with the same center tone in the major-minor-system and the third-pitch-system in the Chine Bell of Zeng Marquis.

Study on the Diversity Development of Singing Style and Forms of Mezzo-Soprano in China;

The Definition of Voice Part and the Training of the Unity of Register of Mezzo-soprano;