Lorde has spoken about the "worst gig moment" of her life ahead of the release of her hugely-anticipated second album Melodrama.

The 'Green Light' singer was being interviewed on Radio X when she looked back on a stage moment that she was less proud of than others.

"I mean, because I started all of this when I was like 14, 15, so I didn't have a lot of gig history before that," she said.

"I was in a band when I was like at school called Extreme. It was a rock band. We were the 12-year-old version of extreme.

"There were a lot of bad moves. There was a lot of getting people to clap. I distinctly remember thinking: 'I am not cool in this moment. This is not a cool year for me.'"

She also revealed that some footage of the gig itself had found its way onto YouTube.

"If you like a laugh it's quite funny," she said.

The New Zealand artist is preparing to release her second album Melodrama, due for release on 16 June.