Twain attends high school reunion; Ely reunites with Flatlanders; Nelson on Grand Ole Opry birthday bash.
A variety of country-music stars to gather in Chicago and Austin, Texas.
Simpson to visit U.S. troops; Jackson to get his porn back; Fat Joe makes a special delivery.
Jimmy Page, Black Crowes, Aerosmith, Nine Inch Nails, George Clinton, Dust Brothers...
Willie Nelson, Diane Warren also will be inducted at June ceremony.