'It's On Again' singer Alicia Keys was also there with the song's producer.

This image appears in the gallery:
29 Pictures You Might Have Missed This Week (22nd April)

1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
9. 

10. 29 images

See the full gallery: 29 Pictures You Might Have Missed This Week (22nd April)