UK rapper Professor Green revealed the story behind his unexpected collaboration with Amy Winehouse at Proud Galleries in Camden on June 23rd. “From out of nowhere, Amy Winehouse comes up on stage, walked past me, grabbed the mic and started singing Lily [Allen’s] parts of ‘Just Be Good To Green’,” he explained to ITN. “I thought, okay, cool. We spoke afterwards so we have a little bit of a rapport but I hadn’t met her before that.” Green said he was open to teaming up with Amy on another record. Watch the interview and low quality footage of Amy’s cameo via YouTube below.