**Song excerpts** are provided in mp3 format and can be either downloaded directly or played from within the OSF interface. Excerpts are made available under Fair Use and are intended for research purposes only. Metadata for all *NHS Discography* songs is available at https://osf.io/mvy8c/; please see also Mehr et al., 2019, *Science*, and the *Natural History of Song* OSF page at https://osf.io/jmv3q/.
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