Al-tas'chith (Hebrew al-tashcheth', אִלאּתִּשׁחֵת, destroy not; Sept. μὴ διαφθείρῃς), in the title of Ps 57; Ps 58; Ps 59; Ps 75, seems to have been the commencement or name of a kind of poem or song, to the melody of which these Psalms were to be sung or chanted. This is the view taken by Aben- Ezra (Comment. on Psalm 57). Others, however, of the Jewish interpreters (e.g. Rashi and Kimchi) regard these words as a compendium or motto to the contents of the Psalms to which it is prefixed. SEE PSALMS.