A song by John Dowland, the twentieth of the First Booke of Songes or Ayres, which was first published in 1597.

Come, heavy sleep, the image of true death,
And close up these my weary weeping eyes,
Whose spring of tears doth stop my vital breath
And tears my heart with sorrow's sigh-swoll'n cries.
Come, and possess my tired thought-worn soul,
That living dies, till thou on me be stole.

There are two singers in the version I have heard: a tenor and a bass in relaxing polyphony. The primary instrument is a lute. As befitting a lullaby, the song is slow and seems to circle downward towards perfect rest, and it ends in a long instrumental segment.