X Factor winner Alexandra Burke's debut single Hallelujah is the first chart-topper of 2009.
She held onto the top spot in the singles chart for a second week, while another X Factor champ Leona Lewis went back up to number two with Run.
A second version of Hallelujah, sung by American Jeff Buckley, dropped from number two to number seven.
Leona's success isn't just in the singles chart, as Spirit is the UK's number two album as well.
That's one spot behind Take That, whose album The Circus is battling to be the biggest seller of the year.
One of Take That's biggest rivals for that title is Duffy, and her album Rockferry leapt back into the top 10 at six.