The so-called "three folds" is not a singing method. Su Shi discussed the "three-fold music method" and said: "In the old days, there were three folds in Yangguan, but now the singer just stacks each sentence again. As far as the whole song is concerned, it is 40% off again, which is wrong. If each sentence is sung three times to correspond to a triple sentence, it is a mess and there is no rhythm. When I was in Michigan, Chief Wen Xun went to Michigan on business. He said that he got an ancient version of Yangguanqu, with a sad and broken tone, which was different from what he often heard before. After singing every sentence except the first sentence, I realized that the' three folds' of ancient books are like this. When I was in Huangzhou, I once read Bai Juyi's "Five Poems on Wine", which read "Get drunk when you meet, and listen to the fourth sound of Yangguan", and marked: The fourth sound, advise you to drink more, as a test. If the first sentence is repeated, then this sentence is the fifth sound, and now it is the fourth sound, then you can be sure that the first sentence is not repeated. "
In addition, the original poem was sung three times in a basic tone today. Therefore, it is called "three stacks".
According to my understanding, triple play means singing three times over and over again. What Su Dongpo said probably means that Wang Wei's> didn't sing the whole poem repeatedly at that time, but sang the last three sentences once, which is slightly different from the current triple interpretation.