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- Cavalli-Sforza's The Great Human Diasporas (1995)
- use of principal components analysis (PCA) to study distributions of genes that are easy to test in blood samples
- musicologists have long been interested in music transmission and musical influence
- e.g. Italian Medici; New Orleans jazz
- techniques such as PCA could be applied to music
- one of the best generalizations about culture is that it is geographically correlated