William Child was sometime organist at the Chapel Royal.

Lyrics: Psalm 81, v.1-4

Sing we merrily unto God our strength: make a cheerful noise unto the God of Jacob.
Take the psalm, bring hither the tabret: the merry, 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.
Hallelujah.