Psalms
The names "Psalms" and "Psalter" come from the Septuagint (the Greek translation of the Old Testament). There, they were about stringed instruments (for example, the harp, lyre and lute), then to songs sung with them. The traditional Hebrew title is tehillim. Tehillim means "praises", though many of the psalms are tephillot ("prayers"). One of the first collections in the book was titled "the prayers of David son of Jesse" (72:20, NIV).