“Psalmos occurs some 87 times in the Septuagint, some 78 of which are in the Psalms themselves, and 67 times in the psalm titles. It also forms the title to the Greek version of the Psalter (Psalmoi) translating the Hebrew tahilah. On rare occasion the term psalmos can have reference to the songs of the ungodly (Job 21:12; Lam. 3:14), but by far the most frequent occurrence of the term in the Psalter itself. This would have had a determinative effect on the understanding of the term in New Testament times. In the New Testament Psallo occurs in Romans 15:9; I Corinthians 14:15; Ephesians 5:19; and James 5:13. Its noun form psalmos is found in Luke 20:42; 24:44; Acts 1:20; 13:33; I Corinthians 14:26; Ephesians 5:19; and Colossians 3:16.”
~Michael Bushell