Epic music is hero music, superhuman, strength, strong music, valor, superhero music
heroic, long, grand, monumental, vast, Homeric, Miltonian
relating to or characteristic of an epic or epics.
"England's national epic poem Beowulf"
a long poem, typically one derived from ancient oral tradition, narrating the deeds and adventures of heroic or legendary figures or the history of a nation.
heroic poem, long poem, long story, saga, legend, romance, lay, history, chronicle, myth, fable, folk tale, folk story