This thesis examined the aspect of differentiation and significance of ‘Manhoengcheongryu’ works contained in Cheongguyeongeon(by Kim Cheon-Taek). The ‘Manhoengcheongryu’ works of Cheongguyeongeon(by Kim Cheon-Taek) were changed into many different looks in the process of transmission. In this thesis, this changed look was called the differentiation of ‘Manhoengcheongryu’, and the differentiated looks of ‘Manhoengcheongryu’ works were divided into ① a case in which two songs were contained in the same musical piece within the collection of poems, ② a case in which the same work was contained as a different musical piece within the collection of poems, and ③ a case in which it was handed down as the same musical piece, but the contents were differentiated a lot enough to be classified into another group.
The results of examining the differentiation of ‘Manhoengcheongryu’ could be summarized as follows. First, in case of the differentiation aspect shown in ① & ②, even when the ‘Manhoengcheongryu’ transmitted till the 19th century showed the different sex of singers, and the name of musical piece was different, it was possible to see the preference for some Manhoengchengryu works in the site of performance. Just as the work quoted earlier, the ‘Manhoengcheongryu’ work initially transmitted was performed after modifying its contents suitable for the preference in the site of performance. Even though the differentiation aspect shown in ③ was a bit different from those two above differentiation aspects, eventually, this case was also closely related to the preference or taste of the enjoyers mentioned earlier.
Those differentiation aspects showed the unified look in the 19th century after the contents and musical piece of ‘Manhoengcheongryu’ were differentiated. When the kinds of songs sung in the site of performance were diversified in the 20th century, there were some changes in them just as the existing songs with the unity became a musical piece or a genre. Also, the changes in the site of performance and the changes in the preference/taste of enjoyers probably affected them.