The singer performed at the Eden Project on Tuesday night, following two weeks of cancelled gigs, but fans who saw her performance have joined the growing chorus of people begging the singer to get help.

Reports say Amy appeared to be in tears while onstage, hitting herself on the head with a microphone in frustration when she forgot the words to her songs, and a fan said she finished by spitting into the crowd.

Melinda Trevaskis, 26, from St Austell, said: "The gig became absolutely awful. Members of her entourage were coming on to the stage, obviously worried she couldn't go on, and she would just shout "f*** off" at them. Everyone in the crowd just felt sorry for her."

But Amy's spokesman downplayed the incident. He told The Mirror: "Amy was annoyed with herself.

"She is a bit ring rusty after not having played for a while and was upset after making a few mistakes in the set."

She's not allowed to croak till I get to see her in concert! Seriously though she's totally throwing away the talent she has way too soon. She's gotta be big for at least 5 years before she should be going down the crack and heroin route.

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Here's a small clip of Amy attempting to sing 'Rehab' during the gig.