Mahalath Maschil: in the title of Ps. 53, denoting that this was a didactic psalm,
to be sung to the accompaniment of the lute or guitar. Others
regard this word "mahalath" as the name simply of an old air to
which the psalm was to be sung. Others, again, take the word as
meaning "sickness," and regard it as alluding to the contents of
the psalm.