A PSALM — strictly, a song sung to a plucked instrument (root zamar, to pluck strings), which is why the Greek psalmos and English 'psalm' follow it. Fifty-seven psalms carry the word in their heading. Worth pairing with the little prefix le- that so often follows it (le-David): le- means of, by, for, and belonging to all at once, so a heading like mizmor le-David is a heading and not a signature, and this library reports it as such rather than settling a question the Hebrew leaves open. → first discussed at Psalms 23:1