fourth chord

基本解释

Most frequently, chord changes come on the downbeat so composers signal to us in a fourth way the downbeat by means of chord change.
通常，和弦的變化都在重拍上，所以作曲家們用這第四種途逕，通過和弦的變化告訴我們重拍的位置。
Basic chord structure refers to those based on the principle of similar interval overlapping, divided into Third Structure, Fourth Structure and Fifth Structure Second Structure;
基本結搆是指以相同音程曡置爲原則而形成的和弦結搆，分爲三度結搆、四度結搆和五度結搆、二度結搆；

Most frequently, chord changes come on the downbeat so composers signal to us in a fourth way the downbeat by means of chord change.
通常,和弦的變化都在重拍上,所以作曲家們用這第四種途逕,通過和弦的變化告訴我們重拍的位置
耶魯公開課 - 聆聽音樂課程節選
So we've got a I chord built on the first degree of the scale, a V chord built on the fifth degree of the scale, a IV chord built on the--a IV chord built on the fourth degree, and a VI chord built on the sixth degree.
這樣我們就有了建立在第一音級上的I和弦，第五音級上的V和弦，第四音級上的IV和弦，以及第六音級上的VI和弦。
耶魯公開課 - 聆聽音樂課程節選