Psalms 81:1-3

LITV(i) 1 To the chief musician. On Gittith. Of Asaph. Sing aloud to God our strength; shout for joy to the God of Jacob. 2 Lift up a song, and the timbrel, the pleasing lyre with the harp. 3 Blow the ram's horn in the new moon, at the full moon, on our feast day.