In our conversation before broaching the main topic at our recent meeting, I conflated two books about music, which I would now like to rectify.
This Is Your Brian on Music is actually by Daniel J Levitin. Oliver Sacks wrote Musicophilia.
On whether animals make music, see Nils J. Wallin, Björn Merker, and Steven Brown, (eds) The Origins of Music, section II, "Vocal Communication in Animals."