The objectives of this research were to study (1) the development of knowledge on the aesthetics of Lam in Ubon Style, and (2) the process of transferring knowledge to inherit the performing arts of Molam Morlam-Ruang-Tor-Klon in Ubon style. Data from documents and fieldwork were analyzed and presented using descriptive analysis. The results showed that there are developments and changes according to the eras, divided into the old era before 1937, a few numbers of performers; the changing era into theatrical performance; the modern Morlam era brought popular musical instruments to play; and the current Morlam era, in which light and sound technology is used to help in the performance of three aspects of aesthetics: melody, poetry, and aesthetics of singing techniques. Regarding the process of transferring knowledge, the results indicated that two national artists have provided knowledge by practicing the performing arts in singing, dancing, and poetic gestures. Improvements are made in each area to enhance learners' skills development. The study provides significant insight and implications for developing learners' skills in performing arts at home.