The Grenfell Tower charity single Bridge Over Troubled Water is on course to claim Number 1 this week.
The track was released yesterday (Wednesday, June 21) and is set to top the charts on Friday night.
The Artists For Grenfell all-star rendition of Simon & Garfunkel's track has sold 120,000 copies already across downloads and streaming equivalent sales, breaking records.
The song - which features over 50 artists including Stormzy, Robbie Williams, Paloma Faith and the London Community Gospel Choir - has seen the biggest opening day of any single this decade.
The track is currently outperforming its nearest rival, Luis Fonsi, Daddy Yankee and Justin Bieber's Despacito by 40,000 copies, the Official Charts Company reports.
The track has been recorded at Sarm Studios in West London – half a mile from Grenfell - and was put together by X Factor and BGT boss Simon Cowell.
Simon, who has put £100,000 of his own cash into the fundraiser, said: "Following the tragic fire at Grenfell Tower in West London, the record industry came together to record a single for the victims of the disaster. Over 50 artists gave their time and support to make this happen. The song is ‘Bridge Over Troubled Water’.
"All funds raised will go to The London Community Foundation, who will manage the distribution to those in need."
To make further donations to Artists for Grenfell, go to the dedicated website www.artistsforgrenfell.com. All proceeds – from both the track and donations - will be distributed via The London Community Foundation.