“Check your egos at the door” read the sign on the front door of A&M Studios in Los Angeles on the night of January 28th, 1985. Producer Quincy Jones had placed it there because dozens of the nation’s biggest singers were walking through that door, and he had exactly one…

Source: RollingStone
Link: 'We Are the World': A Minute-by-Minute Breakdown on Its 30th Anniversary