The Wilson sisters are one of rock and roll's greatest duo's of all-time. The Rock and Roll Hall of Famers are releasing a new album and it features a guest appearance from another rocker.

FOX's Laura Ingle has your 'Bonus Track':

Ann and Nancy Wilson, the hard-rocking sisters of the band Heart, have brought the world such classic hits as 'Barracuda' and 'Crazy on You'.

Now they're set to release the bands 16th album titled 'Beautiful Broken' next week. And heavy metal fans will hear a familiar voice while rocking out to the titled track...

A special guest appearance from Metallica's front man James Hetfield. Heart's management tells me the collaboration came about while Hetfield was visiting Sunset Sound where the Wilson sisters were recording the song and was asked to sing along:

(Heart) "She's beautiful and broken, just like you and me."

Metallica's front man has only made a handful of non-Metallica releases during his three-decade long career, making this a real rock and roll rarity.

I'm Laura Ingle and that's your Bonus Track.

Follow FOX's Laura Ingle on Twitter: @LauraIngle
For more information on Heart CLICK HERE
Follow Heart on Twitter: @officialheart

(Artwork: Brian McGuffey)
(Artwork: Brian McGuffey)