Short answers, pulled from the story.
The Night That Changed America: A Grammy Salute to the Beatles aired on CBS on the 9th of February, 2014, with a rerun on the 12th of February, 2014. UK viewers saw it on ITV on the 2nd of May, 2014.
The concert was filmed on the 27th of January, 2014 at the West Hall of the Los Angeles Convention Center in Los Angeles, California, one day after the 56th Annual Grammy Awards.
Paul McCartney and Ringo Starr, the two surviving members of the Beatles, both attended and performed. They closed the show together with "With a Little Help from My Friends" and "Hey Jude."
The tribute marked the 50th anniversary of the Beatles' first appearance on The Ed Sullivan Show, which originally aired on the 9th of February, 1964.
Kenneth Ehrlich served as executive producer, with Rac Clark as co-executive producer. The program was written by David Wild and Ehrlich, and directed by Gregg Gelfand. It was presented jointly by the Recording Academy, AEG Ehrlich Ventures, and CBS.
Performers included Maroon 5, Stevie Wonder, Ed Sheeran, Katy Perry, Imagine Dragons, Eurythmics, John Legend, Alicia Keys, Brad Paisley, Pharrell Williams, Dave Grohl, Gary Clark Jr., and Jeff Lynne, among others, alongside Paul McCartney and Ringo Starr.