Lewis recently won an award in Germany
The latest single from singer Leona Lewis has become the fastest-selling digital-only track in the UK.
Snow Patrol cover Run, which was never originally intended to be released as a single, was downloaded almost 70,000 times in its first two days.
It beats Estelle's American Boy, which sold 51,857 downloads in a week to become the biggest digital-only single.
Lewis, who is likely to score her third number one, is nominated for record of the year at the Grammy Awards.
Most popular download
Her chart-topper Bleeding Love is shortlisted alongside fellow UK acts Coldplay, M.I.A., Adele and Robert Plant.
Lewis first performed Run on BBC Radio 1's Live Lounge, which was originally a number five hit in the UK for Snow Patrol.
It was a subsequent performance on The X Factor which prompted record bosses to go ahead with the digital single release.
The song also features on an enhanced version of her album Spirit, which became the first re-release to go straight in at number one, beating Dido's third collection.
Lewis's album has sold some four million copies around the world since it was first released a year ago.
Apple has said, meanwhile, that the singer's song Bleeding Love is its most popular downloaded track of 2008 on iTunes.
Coldplay's Viva La Vida is the most popular album on the music download site during the past year.