Adele on fast track with '25'

British songbird Adele is headed for a world record and her album sales show no signs of slowing down. The singer's third studio album, 25, was released on Friday and racked up more than 900 000 sales on iTunes alone the same day.In the US, more than 2.3 million copies of the album were sold in three days, making it only the second album since 1991 to sell more than 2million copies in a single week.