Music
The electro act, real name Adam Young, climbs up 38 places to claim the top spot and beats off competition from Iyaz's 'Replay', which is at number two.
Last week's chart-topper Lady GaGa drops to third place with 'Bad Romance', followed by Sidney Samson's 'Riverside (Let's Go!)' and Alexandra Burke's 'Broken Heels' in fourth and fifth respectively.
Meanwhile, OneRepublic enter the top ten with 'All The Right Moves', which climbs up 20 spots to take ninth place.
The top ten singles in full (click for our reviews):
1. (39) Owl City: 'Fireflies'
2. (3) Iyaz: 'Replay'
3. (1) Lady GaGa: 'Bad Romance'
4. (2) Sidney Samson ft. Wizard Sleeve: 'Riverside (Let's Go!)'
5. (7) Alexandra Burke: 'Broken Heels'
6. (4) Glee Cast: 'Don't Stop Believin'
7. (5) 3OH!3 ft. Katy Perry: 'Starstrukk'
8. (8) Ke$ha: 'Tik Tok'
9. (29) OneRepublic: 'All The Right Moves'
10. (10) The Saturdays: 'Ego'
Singles Reviews
Darren Hayes: 'Bloodstained Heart' review Hayes continues his pursuit for old-fashioned romanticism.
The Sound
Sunday chart predictions: Maverick Sabre, moreHas Maverick Sabre topped the album charts? Find out in Friday's midweeks.
Music Interviews
Adam Lambert eyes Jessie J collaborationDigital Spy talks to the singer about his new album 'Trespassing'.
Album Reviews
Speech Debelle: 'Freedom of Speech'Speech Debelle storms back with her second album Freedom of Speech.
