More people listened to Lady GaGa online this year than any other artist.
The whacky dresser's tracks topped people's charts according to online music site Last.fm.
It says 35 million users listened to tracks on its site this year - and Lady GaGa's songs were played more than 18.5 million times.
In second place are American rockers The Killers, while Lily Allen is the highest British act in third place with her album It's Not Me, It's You.
2009 Most Played Online (on Last.fm)
- 1. Lady GaGa - The Fame
- 2. The Killers - Day and Age
- 3. Lily Allen - It's Not Me, It's You
- 4. Prodigy - Invaders Must Die
- 5. Franz Ferdinand - Tonight
- 6. Beyonce - I am... Sasha Fierce
- 7. Animal Collective - Merriweather Post Pavilion
- 8. Green Day - 21st Century Breakdown
- 9. Yeah Yeah Yeahs - It's Blitz!
- 10. Kanye West - 808s and Heartbreaks