‘For the Chief Musician; set to (‘al) Muth-labben. A Psalm of David.
The psalm is offered for worship to or by the Choirmaster, and set to the tune ‘al Muth-labben (possibly ‘on the death of a son', but it has been suggested that by repointing it could mean ‘trebles (or ‘young women') for clarity' - ‘alamoth labin). It is of the Davidic collection, and may well be by David himself.