In A Million Years of Music, Gary Tomlinson develops an extensive evolutionary narrative that emphasises several important components of human musicality and proposes a theory of the coalescence of these components. In this essay I tie some of Tomlinsonâ€™s ideas to five constraints on theories of musicâ€™s evolution. This provides the framework for organising my reconstruction of his model. Thereafter I focus on Tomlinsonâ€™s description of â€˜entrainingâ€™ Acheulean toolmakers and offer several criticisms. I close with some tentative proposals for further theorising.