He lost his mum Constance when he was 15 when she was murdered by ex-boyfriend John Riccardi - and the tragedy sent the teenage Navarro into a spiral of heroin abuse and depression.

Mourning Son is co-written by the Jane's Addiction guitarist. He says: "Sharing my experiences could serve as a tool to help those who have survived the trauma of losing a family member to murder, or loss of any kind for that matter. Many of us invent our own coping skills.