His books include Blackfoot Musical Thought: Comparative Perspectives (1989). Ohio: The Kent State University Press. ISBN 0873383702.
External link
Department of Anthropology@University of Illinois Urbana-Champaign School of Music: Bruno Nettl (http://www.anthro.uiuc.edu/faculty/nettl/)
Native Culture: Midcentury Anthropology At Indiana, Arapaho Bill Shakespear, and Me (http://www.nativeculture.com/featured_music/BNettl/) by Bruno Nettl
Nettl summarizes the consensus on the subject by stating that ethnomusicology is "...the field which pursues knowledge of the worlds music, with emphasis on that music outside the researchers own culture, from a descriptive and comparative viewpoint" (11).
Nettl states that because "human memory is hardly able to retain, with equal detail, what was heard ten seconds ago along with what is being heard in the present, notation of some sort has become essential for research in music" (98).
Nettl states that the identification of genetic relationships of compositions and their variants is the greatest problem in studying geographical movement and distribution of compositions.
Typically, songs which contain texts are short and not repetitive, such as: "It's a bad thing to be an old man," (Nettl, 1989, p.73, 1951 recording of a Crazy Dog Society song) or the relatively lengthy, "Yonder woman, you must take me. I am powerful.
Yonder woman, you must take me, you must hear me. Where I sit is powerful." (Nettl, 1989, p.73, Wissler and Duvall 1909:85 sung by a rock to a woman in the buffalo-rock myth).
(Nettl, 1989) The drum accompaniment to songs is rhythmically independent to the singing but in perfect unison, "slightly off the beat", and "often related roughly by the proportion of 2:3," to the vocal pulse or beat level (though see Pantaleoni, 1987).