Duhm coined the term “Servants Songs.” But Grogan writes that this is a misnomer, because they were never sung. Despite this, the term stuck. Grogan, G. W. (1986). Isaiah. In F. E. Gaebelein (Ed.), The Expositor’s Bible Commentary: Isaiah, Jeremiah, Lamentations, Ezekiel (Vol. 6, p. 254). Grand Rapids, MI: Zondervan Publishing House.