Goddesses of Greek mythology, initially nymphs of sources with variable number, according to the different localities until nine o'clock is inpusieron from Boeotia muses, inspiring in music, poetry, arts and Sciences. They were these: Calliope, Muse of epic poetry, Clio, of history, Erato, lyric poetry, Euterpe, music, Melpomene, tragedy, Polimnia, of the sacred chants and anthems, Talia, of the comedy, Terpsichore, Urania, astronomy and dance.