Janet, with your inimitable talent for digging up facts, you have uncovered an old principle : "Sleep on it ! " Many moons ago when our son was 9, ( now forty something) , and he was determined to master his lines for Gilbert & Sullivan, he took the tapes to bed, recited his role once or twice and then went off to slumbered. I often wondered did he dream he was The Duke of Plaza Torro or Rudddigore's Robin. Invariably he could recite (sing) his part the following morning, and retained it 'til through performance. ...and thereafter. I don't know how long thereafter maybe that's relevant. [log in to unmask] (Mary Manfredi)