Audioslave star Chris Cornell has mixed feelings about drug angel dust because it turned him into a crazed recluse - but fired up his songwriting imagination. The rocker had a bad PCP (phencyclidine) experience when he was 14 and it changed his life for both the better and the worse. He explains, "I got a panic disorder... I wasn't telling anyone the truth. It's not like you go to your dad or your doctor and say, 'Yeah, I smoked PCP and I'm having a bad time.' "I became more or less agoraphobic... From 14 to 16, I didn't have any friends. I stayed at home most of the time. "Up 'til then life was pretty great. The world was big an I felt I could do anything I wanted. Suddenly, I felt like I couldn't do anything. "But in the isolation, my imagination really had time to run." The results from this period went on to become hits for Cornell's grunge supergroup Soundgarden. His PCP experience scared the rocker away from taking hard drugs until he was in his late 20s, when alcoholism led him back into a spiralling substance abuse hell. The now clean and sober star adds, "The worst drug experimentation I ever did was because I was drunk and didn't care."