The aptly titled Progress is notable not just for being Take That's first album to feature Robbie Williams since 1995, but also for its daring sonic palette, which takes the group light-years away from their boy-band beginnings. It overflows with electro-tinged paranoia, flitting between fist-pumping, arena-sized pop (“The Flood”, “Kidz”) and heavily filtered curios (“Underground Machine”). Constantly teasing out strands of experimentation while still maintaining the band's expert ear for a skyscraping hook, it's one of the boldest pop albums of its time.