For those of you who never thought you’d see John Lithgow share the stage with Ned Rorem, well, okay, technically, you’re right: their appearances at Symphony Space in tomorrow’s 12-hour “The Book That Changed My Life” event are several hours apart. But it still sounds like a pretty nifty way to celebrate National Read-Aloud Day, the National Book Foundation’s bid to “help people rediscover the joy of reading aloud and sharing a great book with people you love.”