Iyaz knocks Owl City off Oz top spot

Iyaz has topped the Australian chart with his debut single 'Replay'.

The 22-year-old R&B singer knocks Owl City's 'Fireflies' into second place, ending its five-week reign at number one.

Mumford & Sons climb two places to three with 'Little Lion Man', while Ke$ha completes the top five with new single 'Blah Blah Blah' at four and former chart-topper 'Tik Tok' in fifth position.

David Guetta's 'Memories', which features Kid Cudi on vocals, rises five places to number nine and Jay Sean's 'Do You Remember?' climbs to a new peak of ten.

Elsewhere, Mumford & Sons get the highest new entry with 'The Cave' at 33, while Justin Bieber's 'Baby' debuts four places lower at 37.

The top ten singles in full (click where possible for our reviews):

1. (2) Iyaz: 'Replay'
2. (1) Owl City: 'Fireflies'
3. (5) Mumford & Sons: 'Little Lion Man'
4. (4) Ke$ha ft. 3OH!3: 'Blah Blah Blah'
5. (3) Ke$ha: 'Tik Tok'
6. (7) Lady GaGa: 'Bad Romance'
7. (6) Jason DeRulo: 'Whatcha Say'
8. (8) Jay-Z ft. Alicia Keys: 'Empire State Of Mind'
9. (14) David Guetta Feat. Kid Cudi 'Memories'
10. (12) Jay Sean ft. Sean Paul, Lil Jon: 'Do You Remember?'