The traditional Javanese tembangs created by Sunan Kalijaga, especially Lir ilir and Kidung Rumekso ing Wengi, have an extraordinary depth of philosophical meaning when associated with Javanese culture. Therefore, this research aims to explore and analyze the philosophical meanings contained in the two tembangs and find out how the spiritual messages in the tembangs are still relevant to the conditions of society in the modern era. The sources of data for this research are (1) interviews with Sunan Kalijaga's descendants, (...) artists in Demak Regency, Demak Regency officials, (2) historical records and scientific articles about Sunan Kalijaga, and (3) direct observation in Demak Regency. This research uses Ferdinand de Saussure's semiotic theory to find out the deeper meaning of the text of the two tembangs. For data validation, this research uses the triangulation method, in order to compare all available data and find a common thread of reliability to be presented as scientific data. In the interpretation stage, the researcher tried to explore the messages contained in the two tembangs, which were analyzed from the lyrics of the tembangs and the opinions of experts found in Demak Regency. The results show that both tembangs contain philosophical teachings on how to achieve wisdom and peace in every episode of human life. They also teach about the importance of establishing a good relationship with God. In addition, this study also revealed that the spiritual messages in these two tembangs are still relevant as a reflection of everyone's spiritual journey in the modern era. (shrink)