“五度”这个音程,在音乐理论或音乐实践中,是经常遇到的,是广一个很重要的、很有趣的音程。就说乐器定弦吧!除了少数的乐器外,一般都是用五度来定弦的。二胡定弦的1—5.6—3.2—6,等都是五度关系。小提琴的四根弦,即G、D、A、E,也各以五度相隔的。平时我们所说的大音阶的七个音,即1 2 3 4 5 6 7,与五度也有密切的关系。这七个音是用“五度”的方法求得的。比如以“1”音为第一个音,往上五度是“5” The five-degree interval, which is often encountered in musical theory or music practice, is a very important and interesting interval. Just say that the instrument is set! Apart from a few instruments, it’s generally five degrees to set the string. Erhu strings of 1-5.6-3.2-6, and so on are five degrees. The four strings of the violin, namely G, D, A, E, are also separated by five degrees each. The seven tones of the great scale we usually speak of, namely 1 2 3 4 5 6 7, are also closely related to the fifth degree. These seven tones are obtained using the “five degrees” method. For example, “1” sound as the first tone, up five degrees is “5”