Canadian singer Feist has credited an iPod Nano advert with turning around her fortunes in the music industry.

The four-time Grammy nominated songwriter - real name Leslie Feist - was given a major career boost when her tune 1234 was used to soundtrack the TV and radio promos for the popular MP3 player.

Sales of the 31-year-old's solo album The Reminder have since dramatically increased, but Feist insists she had no idea the ad would have such a massive impact on her career.

She says, "I felt a definite shift (after the advert came out), it seemed to peak a lot of curiosity which luckily led back to an album and video I believe in. It just shows you the power of that kind of thing, as opposed to some preconceived marketing ploy.

"I was a little naive as to the impact it would have because I really didn't have any idea it would be like that. But it did me nothing but favours because I've continued doing what I do, but with so many new open ears from so many more people than there were before."