Further, as an example of music, let us adduce David, playing at once and prophesying, melodiously praising God. Now the Enarmonic suits best the Dorian harmony, and the Diatonic the Phrygian, as Aristoxenus says. The harmony, therefore, of the Barbarian psaltery, which exhibited gravity of strain, being the most ancient, most certainly became a model for Terpander, for the Dorian harmony, who sings the praises of Zeus thus: