SOTO SILVA, I. William Echard. Psychedelic Popular Music: A History Through Musical Topic Theory. Indiana University Press, 2017, 306 pp. ALPHA. Revista de Artes, Letras y Filosofía, [S. l.], v. 1, n. 50, p. 345–348, 2020. DOI: 10.32735/S0718-2201202000050800. Disponível em: https://revistas.ulagos.cl/index.php/alpha/article/view/800. Acesso em: 7 mar. 2026.