Charles Ellicott Commentary Job 30:31

"Therefore is my harp [turned] to mourning, And my pipe into the voice of them that weep." — Job 30:31 (ASV)

My harp also is turned to mourning. —Or, Therefore is my harp turned to mourning, and my pipe into the voice of them that weep. The musical instruments here named, like those of Genesis 4:21, are respectively the stringed and wind instruments.