Angelbert
It has the interesting features of citing David's lament of the death of Saul in "II Samuel" ( 1:21 ) , and its effect on nature , which Paulinus II of Aquileia cites in his "planctus" on the death in battle of Eric of Friuli . Rhythmically , the poem is an imitation of Venantius Fortunatus' "Pange , lingua , gloriosi proelium certaminis" . The strophes begin with the letters of the alphabet from A to P as a mnemonic device aiding recitation . 
<triplet> II Samuel <subj> David <obj> characters <subj> Saul <obj> characters