Washington, Feb. 6 -- Musicians Elton John and Brandi Carlile announced their upcoming collaborative album, Who Believes in Angels?

They released its title track alongside a trailer documenting the creative process, reported People.

In the video, John explained the album "came at the end of the most amazing year" following his Goodbye Yellow Brick Road Tour, and he was looking "to do something different" and not "coast" in his career.

Carlile, a longtime fan of his, felt like a perfect collaborator. "When I met her I fell in love with her, and I just thought she had the most amazing voice. I knew I would find her inspiring, and I knew she would find me inspiring," said singer.

"I wanted this album to be special, but you can't guarante...