A Word from Calvin on Hymns

SINGING WITH UNDERSTANDING REQUIRED

As for the rest, it is necessary to remember that which St. Paul hath said, the spiritual songs cannot be well sung save from the heart. But the heart requires the intelligence. And in that (says St. Augustine) lies the difference between the singing of men and that of the birds. For a linnet, a nightingale, a parrot may sing well; but it will be without understanding. But the unique gift of man is to sing knowing that which he sings. After the intelligence must follow the heart and the affection, a thing which is unable to be except if we have the hymn imprinted on our memory, in order never to cease from singing.

From John Calvin's Preface to the Psalter, 1543