They quickly added, "But fear not, he was only there to play for the inmates of Changi Prison, and also to do a special question and answer session.

"The former Ozzy guitarist did a half-hour set for 40 prisoners, declaring: 'It seemed like the right thing to do, since my first gig with Ozzy was in a prison [1987 at Wormwood Scrubs].'" - Classic rock has video of Zakk here

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