Netflix has released the official trailer for their upcoming documentary “The Greatest Night In Pop,” which chronicles the making of “We Are The World” in 1985, which was written by Michael Jackson and Lionel Richie.

Over 40 singers took part in the recording, that took place after the 1985 American Music Awards. Collectively they became known as USA For Africa. The song went to number one in almost every country around the world, became the fastest-selling single in USA history and went on to become one of the top ten best selling singles of all time. It went on to raise $63 million for humanitarian aid in Africa.

The song was only completed the night before recording was due to start. Michael had previously recorded a vocal guide for the singers that would be involved. He sang the lyrics that were subject to change and the tape was distributed in advance to the artists.

On the night of the recording Michael arrived first to record his solo section and vocal chorus by himself. Famously as the other artists started to arrive they saw a sign on studio door that read “Please check your egos at the door.” Recording started at 10:30pm and ended 8am the next morning.

Netflix will start streaming the show on January 29th, after its preview at the Sundance Festival on January 19th. You can watch it here.