Εὐτέρπη
From LSJ
Σκηνὴ πᾶς ὁ βίος καὶ παίγνιον: ἢ μάθε παίζειν, τὴν σπουδὴν μεταθείς, ἢ φέρε τὰς ὀδύνας → All life is a stage and a play: either learn to play laying your gravity aside, or bear with life's pains.
English (LSJ)
ἡ,
A the Well-pleasing, name of a Muse, Hes.Th.77, etc.: Pythag. name for eight, Theol. Ar.55.