An anonymous group of Japanese medical students called Green have become the first to have sold a million copies of a track via mobile phones.

An anonymous group of Japanese medical students called Greeeen have become the first to have sold a million copies of a track via mobile phones.

The track is called 'Aiuta' - meaning Love Song. The group have sold around 3 million copies across all digital formats. Greeeen have racked-up over half a million album sales, making them one of Japan's most successful new bands