Adele had to cancel her final two Wembley performances due to damage to her vocal chords. She seemed pretty down about it, so did her fans.
Ant wanted to cheer everyone up, and give Adele's London bound fans something to do...
In less than 24 hours, hundreds of fans had gathered outside Wembley, and the event made it all the way to US news.
There you have it, the power of social media (and Adele's following).