Band Aid 30: Ebola song sales to top 2014 chart
The new version of Do They Know It's Christmas? has already become the fastest selling single of the year - after just a day's sales.
Figures from the Official Charts Company show it is a cert to claim the No.1 position at the weekend after shifting 206,000 download copies in the hours after they went on sale on Monday at 8am.
The original track by Band Aid, released in 1984, sold around 200,000 copies in two days.
The latest reworked version - the fourth - features acts such as One Direction, Coldplay's Chris Martin, Bastille and Ellie Goulding. It has been available to pre-order since last week.
It is being sold for 99p on iTunes with all proceeds going to efforts to help ease the Ebola crisis in west Africa.