In Greek mythology, Terpsichore is one of the nine Muses and goddess of dance and chorus. She lends her name to the word "terpsichorean", which means "of or relating to dance".
Greek statue of Terpsichore from Hadrian's villa, presently at the Prado Museum (Madrid)
Terpsichore on an antique fresco from Pompeii
Terpsichore, Muse of Music and ballet, an oil-on-canvas painting by Jean-Marc Nattier (1739)
In Greek mythology, sirens are female humanlike beings with alluring voices; they appear in a scene in the Odyssey in which Odysseus saves his crew's lives. Roman poets place them on some small island
Terpsichore
…the Titan Mnemosyne each night for nine nights in Piera, producing the nine Muses. According to Apollonius of Rhodes, Terpsichore was the mother of the Sirens by the river god Achelous. The Etymologicum Magnum mentions her as the mother of the Thracian king Biston by Ares. According to the Byzantine scholar…
Attic funerary statue of a siren, playing on a tortoiseshell lyre, c. 370 BC
Archaic perfume vase in the shape of a siren, c. 540 BC
Moaning siren statuette from Myrina, first century BC
Miniature illustration of a siren enticing sailors who try to resist her, from an English Bestiary, c. 1235