With the word EPIC we associate classical music pieces. So most of the music you search within these category contains orchestral-scores. Dynamic action, hunting strings, driving and bombastic power music is the idea behind this category.
Of course EPIC means not only "fast & furious". Sometimes slowmotion and soft tunes can also be identified as EPIC.
You may find other music in other categories that also fits for your project. Feel free to check out some cross search.