Let’s have a look at the pOp movements on this week’s ARIA charts… Katy Perry’s firmly ensconced atop the ARIA singles, physical singles and digital track charts with her hit ‘I Kissed A Girl’. Sam Sparro moves up to No.4 on the official singles chart this week with ‘Black And Gold’, just two weeks out from his next single ’21st Century Life’ being officially serviced to Australian media. Lady Gaga races up 17 chart spaces to No.17 with ‘Just Dance’ while a disappointing debut for Madonna sees her latest single ‘Give It 2 Me’ debut at No.23, though better news for Madge is that it seems fans were in the CD stores buying the single proper – it debuted at No.8 on the physical singles chart. More debuts on the singles chart include MGMT (No.30), Gabriella Cilmi (No.31), Rihanna (No.35) and Brian McFadden (No.37). Rihanna’s new single ‘Disturbia’ isn’t out on CD single yet – it’s No.35 debut due to download sales alone. Over on the albums chart, The Living End couldn’t budge the Mamma Mia soundtrack off the top spot, with the band that inspired the movie, Abba, filling four places in the albums chart (Nos 4, 36, 38 and 40).