Williams was known as "the Gentle Giant" because of his 6-foot, 1-inch frame, mellow voice and low-key profile
The country music star was killed in a helicopter crash hours before a concert
Performers at the Sept. 23 event include Stevie Wonder, Green Day, The Killers
World's richest company has lured away two Sony executives, reportedly has earmarked $1B for original shows during the next year
Luis Fonsi, Daddy Yankee and Justin Bieber make Hot 100 history this week with their international mega-hit 'Despacito'