Britney Spears began her two-year residency at Planet Hollywood Resort & Casino on Friday night, just in time to catch the town’s massive New Year’s Eve crowds.

The audience stayed on its feet for the entire 90 minute show, dancing to airbrushed versions of the 32-yer-old Spears’ top hits, including “Toxic” and “I’m A Slave 4 U.”

Spears has released seven platinum-plus albums since she debuted on the music scene in 1999. Her eighth album, “Britney Jean,” was released this month to tepid reviews.

Britney: Piece of Me,’ Britney Spears’s Las Vegas Residency

But that’s not new: Ms. Spears has long been the pop star most obscured by her own songs. Especially in the second half of her career, since the mid-2000s, the period that followed her tabloid-documented meltdowns, she’s been putty for producers, who give her muscular tracks that ask little of her vocally — and even less emotionally — but leave her with an air of power and control.