“…Both theories are compelling and well supported by evidence in a variety of domains. Many of their associated commentaries addressed their strengths, including the MSB hypothesis’s discussion of groove (Ashley, 2021) and explanatory power for the development of mother-child interactions (Dissanayake, 2021), the credible-signaling theory’s clearly adaptationist framework (Pinker, 2021) and potential support from existing experimental frameworks such as the signaling-game model (Lumaca et al, 2021), and both hypotheses’ potential implications for the neurobiology of developmental disorders (Kasdan et al, 2021). Other commentaries have offered critiques, including defenses of the by-product theory of musical evolution (Lieberman & Billingsley, 2021; Stewart-Williams, 2021), calls to shift the terms of the theorized selection processes (Atzil & Abramson, 2021; Eirdosh & Hanisch, 2021), or an overall hesitance regarding theories of musical evolution claiming broad, unitary, explanatory power (Harrison & Seale, 2021).…”