In Masters of Psalmody (bimo) Aurélie Névot analyses the religious, political and theoretical issues of a scriptural shamanism observed in southwestern China among the Yi-Sani. Her focus is on blood sacrifices and chants based on a secret and labile writing handled only by ritualists called bimo. Through ethnographic data, the author presents the still little known bimo metaphysics and unravels the complexity of the local text-based ritual system in which the continuity of each bimo lineage relies on the transmission of manuscripts whose writing relates to lineage blood. While...