Justin Bieber has revealed that he will make a "special" announcement at this year's Radio Disney Music Awards.

The singer will make the reveal at the ceremony, which is being held on April 30.

The show is being broadcast in the US a day later on May 1.

Bieber said on Twitter: "Making a special surprise appearance on #RDMA. Watch May 1st on @DisneyChannel."

Four songs by the singer meanwhile have now been added to the Rock Band 4 computer game.

A special add-on pack featuring 'Love Yourself', 'Sorry' and 'Boyfriend' was uploaded to the system.

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Watch Justin Bieber being interviewed below: