Follow Kylie Minogue’s progression from ’80s pop phenom to ’90s dance-floor diva. Her early hits illustrate the energetic star’s knack for earworm tunes, chugging beats, and chattering keyboards. She also brings a rare sense of innocence to love ballads like “Especially for You,” a duet with then-boyfriend Jason Donovan. Later, she set her sights firmly on the clubs, with a series of whooshing delights including the Philly soul of “Step Back In Time” and the rave-influenced “What Do I Have to Do.”