Artists' microphones are tested ahead of soundchecks at the O2 Arena before the Jingle Bell Ball.
This image appears in the gallery:
Countdown To The 2011 Jingle Bell Ball!
![Microphones used for sounchecking at the Jingle Bell Ball](https://assets.capitalfm.com/2011/48/behind-the-scenes-at-the-2011-jingle-bell-ball-32-1322858884-view-0.jpg)
23. Artists' microphones are tested ahead of soundchecks at the O2 Arena before the Jingle Bell Ball.
Picture: Richard Johnson