ᾄδεις ὥσπερ εἰς Δῆλον πλέων → you sing as if you were sailing to Delos
P. and V. κρᾶσις, ἡ, σύγκρασις, ἡ (Eur., Fragment), P. μῖξις, ἡ, σύμμιξις, ἡ.