Imagawa, K. (ed.)(2020) Why do we have music? Interdisciplinary
exploration to musicality. Tokyo: Ongaku no Tomo Sha Corp. (in Japanese)
<https://www.ongakunotomo.co.jp/catalog/detail_sp.php?code=139100>
Among the CCI members, Takada (pp.88-100) contributed a chapter.
