Avicii Vs Nicky Romero Claim First UK No 1
The DJs have smashed into the chart to take the top slot...
The European duo toppled Macklemore and Ryan Lewis' Thrift Shop, which slid down one place to No 2.
Harlem Shake gives Baauer the second highest new entry on the chart this week with it sitting comfortably at No 3.
Rihanna Stay (feat. Mikky Ekko) has been in the charts for 12 weeks and it doesn't look like it's leaving any time soon, as it moves back up to No 4.
Disclosure's White Noise (ft. AlunaGeorge) rounded out the top five.
Meanwhile, over in the album charts, the Les Miserables soundtrack is just about holding onto the No 1 slot. The highest new entry, Foals' Holy Fire was pipped to the post by less than 1,000 copies.
Emeli Sande's Our Version Of Events was at No3 and Jake Bugg's eponymous debut LP was at No 4.
And after their success at The Grammys, Mumford & Sons' Babel leaps 12 places to No 5.
The Official UK Top 10 Singles...
1 (-) Avicii vs Nicky Romero - I Could Be The One
2 (1) Macklemore - Thrift Shop
3 (-) Baauer Harlem Shake
4 (8) Rihanna Stay (ft. Mikky Ekko)
5 (2) Disclosure - White Noise (ft. Aluna George)
6 (-) Gabrielle Aplin - Please Don't Say YOu Love Me
7 (-) Bruno Mars - When I Was Your Man
8 (7) Calvin Harris Drinking From The Bottle (ft. Tinie Tempah)
9 (4) Emeli Sande - Clown
10(3) Bingo Players Get Up (Rattle) (ft. Far East Movement)