With the growth of secular music, vocal music began to use the more accessible ____________________ instead of Latin

Each regional style of zheng music has its own regional character, or

A. yun. B. ban. C. gua-zou. D. yijing.

The librettos to The Ring of the Nibelung were written by ______.

A. Arrigo Boito B. Wagner himself. C. King Ludwig of Bavaria D. Hans von Bülow.