O Sing Joyfully

O sing joyfully unto God our strength; make a cheerful noise unto the God of Jacob. Take the song, bring hither the tabret, the merry harp with the lute. Blow up the trumpet in the new moon, even in the time appointed, and upon our solemn feast-day. For this was made a statute for Israel, and a law of the God of Jacob. (Psalm 81:1-4)