Over the Easter weekend, some of the cast of Disney's Lemonade Mouth decided to turn up at the Apple Store in The Grove, Los Angeles and flash mob it. Flash mobbing is a newish craze that involves a group of people turning up at a location and performing an unusual act or performance without permission.

The routine, lead by Chris Brochu and Hayley Kiyoko, two of the film's stars, organised the flash mob with 15 other friends and decided to capture the whole performance on video. They performed the song Determinate from the Disney Channel production Lemonade Mouth.

The video is after the break, take a look and enjoy the looks on the customers faces and Apple Store staff gently escorting them out of the building!