You’ll recognize the words, maybe not the tune. I picked this video because a kid is leading it:

Come, Thou Fount of ev’ry blessing, / Tune my heart to sing Thy grace.

Streams of mercy, never ceasing, / Call for songs of loudest praise.

I will rise and go to Jesus, / He’ll embrace me in His arms;

In the arms of my dear Savior; / Oh there are ten thousand charms.

Teach me some melodious sonnet, / Sung by flaming tongues above;

Praise the mount — O fix me on it — / Mount of Thy redeeming love!