It's Tuesday! Time for another round of "5 Must-Hear Pop Songs of the Week"!
This week's roundup features a comeback track from an Aussie pop princess, the latest offering from a girl group across the pond, an unreleased demo from a living legend, and a dazzling new dance tune from one of the best disco-pop troupes around.

1.) Delta Goodrem, "Sitting On Top Of The World"
Like all proper Australia pop stars (see also: Queen Kylie Minogue), Delta Goodrem is an incredibly successful, beautiful and talented singer-songwriter who got her start on the Aussie soap, Neighbours. Over the past decade she's made a killing Down Under, serving up three studio albums and an impressive eight No. 1 singles.
Nearly four years after her last single, the gorgeous chanteuse has at long last returned with "Sitting On Top Of The World," a swoon-filled, carefree pop ditty about living life and loving life and living in love and all of those wonderful and amazing things that pop dreams are made of. "So get up, stand up/ What you waiting for?" she happily commands. I'm up! I'm up!
The video for the song is equally amazing (and/or alarmingly similar to what I see whenever I close my eyes), featuring Goodrem and a troupe of happy-go-lucky ladies and gents dancing around with balloons in hands. I want to go to there!
+ LISTEN TO DELTA GOODREM, "SITTING ON TOP OF THE WORLD"
Listen to more Must-Hear Pop Songs Of The Week after the jump!










If not for the wisdom of the great people of Paris, this superstar could have just been another back-up dancer. And no, I'm not talking about you, avid Buzzworthy-reader