14 March 2012, 08:57
The 'Baby' singer says the acts had a "big night in the studio" yesterday as he teases more details of new project.
Justin Bieber has revealed that his new super group with Maroon 5's Adam Levine has just recruited One Republic star and songwriter with Adele Ryan Tedder.
The 'One Time' star first teased plans of the project yesterday (13th March) after telling fans of a "big idea" he and Adam had.
Earlier this morning, he logged back onto his social networking account to tell fans of more details.
He tweeted: "big night in the studio tonight. glad to add my boy ryan from @onerepublic to our #SUPERGROUP."
Ryan recently won a Grammy Award for his work on Adele's '21' album and Justin is readying the release of his new studio album 'Believe'.