With due respect, it is clear that Glueman doesn't really know much of anything about ethnomusicology and folklore, which are the long established academic disciplines that he is questioning here.

The" 1954 definition", which has been tossed around here lately, was offered by these folks in 1954 to describe the parameters of their work. Today, they define their work in a somewhat different way--from here: Indiana University Ethnomusicology Institute

:Ethnomusicology is the study of music of all types and from all cultures. :Ethnomusicologists not only listen to the sounds of music within particular cultures and :events but also inquire into people's ideas and beliefs about music. They:

:Explore the role of music in human life
:Analyze relationships between music and culture
:Study music cross-culturally