A demo version of the song “Crazy” by Guns N’ Roses guitarist Slash, and featuring the late Linkin Park vocalist Chester Bennington, has finally surfaced online in its entirety. The demo was streamed during a recent episode of the Appetite for Distortion podcast by producer Big Chris Flores, and you can check it out below!

“Crazy” also features King’s X bassist Doug Pinnick and drummer Matt Star (Mr. Big). The song would eventually become “Doctor Alibi” featuring Motörhead frontman Lemmy Kilmister, and would be featured on Slash‘s 2010 debut solo album.

According to Blabbermouth, the demo will reportedly be released in a more official capacity to benefit 320 Changes Direction, the mental health awareness organization launched by Chester‘s widow Talinda Bennington.