The holiday of Passover starts this week. But Alzheimer's sufferers will not recognize that Friday night will be different from all other nights. When I saw Mom today, I sang some of the Passover songs she’d taught us as kids. There’s the song about frogs jumping on Pharoah’s bed; she remembered that one. My favorite is a haunting melody to Ha lachma anya (which translates to, "This is the bread of affliction...") that she learned in her choir many years ago that we’ve incorp