Aan unsigned Essex singer-songwriter became an overnight sensation when her EP cover was shown worldwide at the launch of the new iPhone.

Emma Blackery, 25, from Basildon, was stunned when she saw the cover art for her DIY release being featured during a presentation at the Apple event in Cupertino, California, last night.

The track Magnetised, from the EP of the same name, was given the central position during a demonstration about Apple Music.

Emma, below, an independent artist who has 1.4 million subscribers on YouTube, said: “It has been the craziest night of my life.”

Britons wanting to buy the new iPhone on a contract will have to pay at least £47.95 a month.

The iPhone X, which was unveiled last night by chief executive Tim Cook in California, can be bought outright from £999 when it is released on November 3.