Guns N’ Roses guitarist Slash spoke in an interview with Variety. He remember the time that he and Chester Bennington recorded a song. He said:

“I forgot all about this until just recently. When I was doing my first solo record, I worked with a lot of different people, some of whom, for whatever reason, didn’t end up on the record.

One was with Chester. We did a song and Linkin Park at the time didn’t allow it to happen, so I did it with Lemmy [Kilmister].

The guy who engineered my demos sent it to me and I sent it to Chester’s family. But it was a trip cause the song really speaks to his state of mind.”

Interview said “will the song possibly be released?”, and Slash responded:

“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.”