When Slash recorded his first solo record, he used a bunch of different artists, one of which was almost Chester Bennington.
He recorded a song "Dr. Alibi" with Slash, but at the time, Linkin Park wouldn't allow him to release the track. So Slash then tapped Lemmy Kilmister to do the track instead, and gave the original recording to Chester's family.
"It was a trip cause the song really speaks to his state of mind," Slash said. "His family has got it so it would be totally up to them. It was really good. He was awesome. It would be fine with me if they wanted to [release] it. Musically it’s basically the same as the Lemmy song, but the lyrics are really poignant."
You can hear the album version of the song below.