Hidden Gems is a 2015 compilation album by Swedish pop group Ace of Base. It was released worldwide by Mega Records on March 6, 2015.
The album consists of previously unreleased material and b-sides recorded by the original lineup between 1991 through 2005. A large majority of the songs were previously released through the band’s Facebook page during Ace Thursdays events, though some of the tracks feature new production. Five of the included songs were previously released years prior as b-sides and bonus tracks. “No Good Lover”, included on this compilation, was originally meant to be a single from Flowers, but later did not make the cut for the album. A previously unreleased version of “Hey Darling”, a track which first appeared on Da Capo, is included on Hidden Gems as an iTunes bonus track.