Planxit autem David, drawing its text from the second book of Samuel in the Old Testament, quotes from David’s lament after Saul and his son Jonathan have been killed in battle. Musically, it occasionally uses the plainchant from the Lamentations for Holy Week, so maybe that is when it was intended to be sung. The text is set in such a way as to be readily intelligible. The Art of Music’s performance was limited to the first and last of the four sections, but the work does not appear manifestly incomplete in that form.