This is a recent Tweematic-based avatar takeover campaign for Warner Music artist Avenged Sevenfold. Fans were able to connect on Twitter to enter a sweepstakes to win a unique prize from the band's official music video. As part of the entry process they were able (and encouraged) to change their Twitter avatar and Twitter header.

You can check out the campaign at http://www.tweematic.com/thestage

Once user connected on Twitter (and changed their Twitter avatar and header), they were asked to complete their entry by providing additional information.

Fans were also encouraged to share the campaign with friends on social media.