Nietzsche's The Birth of Tragedy, andearly 20th century Russians' interpretationsand embellishments of it, informed Losev'stheories of music and myth and his studies ofthe religions of Apollo and Dionysus. Hiscomplex musical aesthetic includes the ideathat music is the expression of a fundamentallyDionysian reality structured by Apollonianelements. In The Dialectic of Myth, heargued that myth is a dialectical necessity(not just a necessity), attacked the secularmythologies of the Enlightenment and Marxism,and upheld ``Christian mythology'' (his term). In ">The Mythologies of the Greeks andRomans, he traced the religions of Zeus,Apollo, and Dionysus from paleolithic Crete tothe end of the Roman Empire.