A music special in the White House East Room that WETA will produce in association with the Library of Congress, Mark Krantz Productions, CoMedia and Cappy Productions.  President and Mrs. Obama will host the concert event on June 2 in honor of musician Sir Paul McCartney’s receipt of the Library of Congress Gershwin Prize for Popular Song.  The evening will include performances by McCartney himself and Stevie Wonder, Elvis Costello, Jonas Brothers, Herbie Hancock, Corinne Bailey Rae, Dave Grohl, Faith Hill, Emmylou Harris, Lang Lang and Jack White, with remarks by Jerry Seinfeld.  President Obama will present the Gershwin Prize to McCartney during the event.  The ninety-minute music special, part of the PBS “In Performance at the White House” series, will feature the concert event, as well as behind-the-scenes footage and interviews.  The program airs Wednesday, July 28 at 8 p.m. ET on PBS stations nationwide, followed by an encore presentation at 9:30 p.m.  (Check local listings.)