Interview with Zac Carper from Fidlar: The last time Carper left rehab, he was determined to use again. He was depressed, and all of his close friends but Schwartzel had abandoned him. The only others who hung around were still using themselves. Fortunately, he got a call from Green Day lead singer Billie Joe Armstrong, who had gone through addiction problems of his own. He talked to him for an hour on the phone, advising Carper that it was worth it to try to stay clean. “I probably wouldn’t be sober today if Billie Joe didn’t call,” he says. “He really helped me when no one else was there.” http://consequenceofsound.net/2015/08/fidlar-stupid-decisions/