Mumford & Sons will be heading to Las Vegas to to perform at the inaugural MTV O Music Awards.
The Sigh No More singers join Lupe Fiasco, Lil B and Matt & Kim on the bill at the show which will honour digital music and fandom.
Organisers said the ceremony will take place at a "mystery location" in Las Vegas on April 28. The hour-long live show will stream online and on mobile.
The show includes categories like "must-follow artist on Twitter" and "best fan cover." Fan voting will decide the awards. MTV says 1.9 million votes have been cast.
Also at the Vegas event, rapper Chidera "Chiddy" Anamege of the hip-hop group Chiddy Bang will try to enter the Guinness World Records for longest freestyle rap.