Week 4 of the WTWF review of the Let It Be Superdeluxeedition.     This week, Disc 3:     Rehearsals and Apple Jams.      Quite different from George Harrison's "Apple Jams".     Eric Clapton is only whispered about here, John's safety net if George doesn't return.    Have a sit, pull up a bowl of cauliflower with cheese sauce, and let us know what you think of what we thing.     All through the day....