Drake's reign at the top of the official singles chart could be coming to an end, as Kungs Vs Cookin' On 3 Burners are on course for number one.
Rapper Drake's One Dance has been at the summit for nine weeks but has now slipped to fourth place.
This Girl by Kungs Vs Cookin' On 3 Burners is number one at the halfway stage of the week, said the Official Charts Company.
Australian funk trio Cookin' On 3 Burners originally released the track in 2009, but a remix by French producer Kungs has seen it take off across Europe this summer.
Justin Timberlake's Can't Stop The Feeling is holding at number two, and Stone Roses have made a strong start at number three with their new song, Beautiful Thing.
Calvin Harris and Rihanna's This Is What You Came For is at five.
David Guetta and Zara Larsson's official Euro 2016 theme This One's For You has surged from 46 to 17 following their performance at Saturday's kick-off match.
In the albums chart, Tom Odell and Rick Astley are battling it out for the top spot.
Just 218 chart sales separate the acts, with Tom taking the lead with Wrong Crowd.
Rick's seventh studio album, titled 50, has the potential to be his highest charting record since his number one debut Whenever You Need Somebody in 1987.
Sir Paul McCartney's fourth compilation album Pure McCartney is new at three, with a special release of ELO's All Over The World - The Very Best Of up 131 places to four.
Completing the top five is Hollow Bones, a new entry from Californian rock band Rival Sons.