Plato, Laws 802e

χωρίσαι που δέον ἂν εἴη τύπῳ τινὶ διορισάμενον, καὶ ἁρμονίαισιν δὴ καὶ ῥυθμοῖς προσαρμόττειν ἀναγκαῖον· δεινὸν γὰρ ὅλῃ γε ἁρμονίᾳ ἀπᾴδειν ἢ ῥυθμῷ ἀρρυθμεῖν, μηδὲν προσήκοντα τούτων ἑκάστοις ἀποδιδόντα τοῖς μέλεσιν. ἀναγκαῖον δὴ καὶ τούτων τὰ σχήματά γε νομοθετεῖν. ἔστιν δὲ ἀμφοτέροις μὲν ἀμφότερα ἀνάγκῃ κατεχόμενα ἀποδιδόναι, τὰ δὲ τῶν θηλειῶν αὐτῷ τῷ τῆς φύσεως ἑκατέρου διαφέροντι, τούτῳ δεῖ καὶ διασαφεῖν. τὸ δὴ μεγαλοπρεπὲς οὖν καὶ τὸ πρὸς τὴν ἀνδρείαν ῥέπον ἀρρενωπὸν φατέον εἶναι, τὸ δὲ πρὸς τὸ κόσμιον καὶ σῶφρον μᾶλλον ἀποκλῖνον θηλυγενέστερον ὡς ὂν παραδοτέον ἔν τε τῷ νόμῳ καὶ λόγῳ. τάξις μὲν δή

for it would be a horrible thing for discord to exist between theme and tune, meter and rhythm, as a result of providing the songs with unsuitable accompaniments. So the lawgiver must of necessity ordain at least the outline of these. And while it is necessary for him to assign both words and music for both types of song as defined by the natural difference of the two sexes, he must also clearly declare wherein the feminine type consists. Now we may affirm that what is noble and of a manly tendency is masculine, while that which inclines rather to decorum and sedateness is to be regarded rather as feminine both in law and in discourse.