Think of the album Foreverly as a musical equation. You start with Billie Joe Armstrong, lead singer of Green Day . Then you add Norah Jones. Then, you get these two very different musicians thinking about doing duets of music from a totally unexpected source: . Finally, substitute the hits that made those iconic siblings famous with something a touch more obscure.
"I'm a big vinyl collector, so I was just flipping through the bins," Armstrong says of discovering Songs Our Daddy Taught Us, a lesser-known album of traditional tunes recorded by The Everly Brothers.