Jessie J established her pop bona fides crafting hits for the likes of Miley Cyrus for a good half-decade before she released an opus of her own. The singer/songwriter’s command of chart-topping pop is evident on her fizzy, upbeat 2011 debut, from her choice of producers (Dr. Luke, David Guetta) to her ability to toggle deftly between genres. She effortlessly channels Rihanna on “Do It Like a Dude,” Katy Perry on the peppy “Domino,” and Natasha Bedingfield on the affirming title track.