"It took a long time to get it done, but we're finally, I don't want to say done-done, but we're right there," Kenneth "Babyface" Edmonds, who's co-producing the set with Walter Afanasieff, tells Billboard. "It's a beautiful, beautiful record. She's singing amazingly well, and it's been a fun project to do."
Streisand made her first public acknowledgement of the album last week via a birthday greeting for Lionel Richie -- thanking him for being part of the project -- that was shown during his concert in suburban Detroit.
The set also includes pairings with Billy Joel, John Mayer, Michael Buble, John Legend, Blake Shelton, Andrea Bocelli and Josh Groban, as well as a virtual duet with the late Elvis Presley.