Anna Maria Busse Berger is Distinguished Professor of Music emerita at the University of California, Davis and the author of The Search for Medieval Music in Africa and Germany, Medieval Music and the Art of Memory, and Mensuration and Proportion Signs. Henry Spiller is Professor of Music emeritus at the University of California, Davis and the author of Erotic Triangles, Javaphilia, Archaic Instruments in Modern West Java, and Focus: Gamelan Music of Indonesia.