This dissertation consists the following: (1) a brief description of the author's field work experience and the state of research in this subject area; (2) an ethnographic account of ritual music of the Dai festivals; (3) an analysis of the music repertory and regional stylistic traits of the Varsika ritual festival; (4) discussion of the diachronic relationship between the Varsika ritual tradition and an ancient ritual music; (5) an investigation of the culture relations among Buddhist ritual music of minorities such as Blan, Dean and Acan. This leads to a discussion of the transtegional musical elements of Dai Buddhist rituaHTTP/1.1 200 OK Transfer-Encoding: chunked Date: Tue, 03 Aug 2010 08:59:52 GMT Content-Type: text/html; charset=ISO-8859-1 Cache-Control: private Server: Apache Set-Cookie: