Didn't know where to post this recently gained information, so I am posting it here.
When Michael Jackson was recording his hit song "Beat It" and they needed a guitar solo for the song and Eddie Van Halen was chosen to do it. The crew had taken a break (lunch?) when Van Halen arrived. When he was alone studying the arrangement, he decided to change the song so that he could rock harder in his solo. Jackson came back and ddie told him about the changes and he liked it better. Van Halen recorded his part within 30 minutes and all he asked or was a case of beer and some food. He also asked that he be given no credit at all on the album.
Eddie talked about it later before he died, but yesterday was the first time I'd heard of it