2 Kings 3:15

Overview - 2 Kings 3
Jehoram's reign.
Mesha rebels.
Jehoram, with Jehoshaphat, and the king of Edom, being distressed for want of water, by Elisha obtains water, and promise of victory.
21 The Moabites, deceived by the colour of the water, coming to spoil, are overcome.
26 The king of Moab, failing in his attempt to break through to the king of Edom, sacrifices his son, and raises the siege.
Treasury of Scripture Knowledge

2 Kings 3:15  (King James Version)
But now bring me a minstrel. And it came to pass, when the minstrel played, that the hand of the LORD came upon him.

bring me
This was evidently intended to soothe and tranquillize the prophet's mind, which had been agitated and discomposed with holy indignation by the presence of the idolatrous king, and the recollection of his abomination. The soothing influence of music is generally acknowledged in every civilized nation.
1 Samuel 10:5 ; 16:23 18:10 1 Chronicles 25:2 1 Chronicles 25:3 ; Ephesians 5:18 Ephesians 5:19

the hand
1 Kings 18:46 ; Ezekiel 1:3 ; Ezekiel 3:14 Ezekiel 3:22 8:1 Acts 11:21