BMG has signed Diane Warren. The music company will represent Warren for publishing and recording, and will release a collection of the legendary songwriter’s new works, performed and recorded by a starry lineup of guests, Billboard can confirm. Under the new arrangements, announced this morning, BMG will administer Warren’s entire songwriting publishing catalog (excluding the U.S. and Canada) under her Realsongs umbrella and release the album of new material, at a date yet to be announced. Several other projects are in the planning phase, a rep tells Billboard. “I’m thrilled with my new deal at BMG. I love the BMG team. They have hit the ground running,” Warren says in a statement. “There is so much already happening that I know this year is going to be ...