Petula Clark says Jacko's 30th anniversary concert was disorganised

Petula Clark says Michael Jackson's 30th anniversary bash was totally disorganised.

She was among the dozens of stars who were called on stage for the We Are the World finale.

Clark says no one knew what they were doing at the event at Madison Square Garden.

"That was totally, totally unrehearsed; none of us had any idea of what we were doing on there," she said.

"I asked Michael what we were supposed to do, and he said 'Don't look at me, I don't know'.

"Apart from that, it was a pretty amazing evening."

Clark has now finished touring with the musical Sunset Boulevard. She says it's nice to be able to sing her own songs again.