Chapter 3 Habakkuk's Prayer.
‘A prayer of Habakkuk the prophet set to Shigionith.'
This third chapter consists of ‘a prayer of Habakkuk' in the light of his visions. It includes an initial prayer, followed by a meditation on the glory of God as revealed in His powerful movement towards, and entry into Canaan, but with a wider connotation relating it to the whole earth. For YHWH is the great Deliverer of His people.
Thus in his meditations he is setting forth God's effective power, using thoughts and ideas from the Exodus and Conquest, which were seen in Israel as the highest expression of His delivering power. It then concludes with praise and worship.
‘Shigionith.' Compare the introduction to Psalms 7 where it is in the singular. Compare also introduction to Psalms 6; Psalms 8; Psalms 12 etc. They are clearly musical directions.