CHART WATCH

While 2009 Australian Idol Stan Walker had a fair old crack at the number one position this week with his debut single 'Black Box', four days of sales couldn't quite equate to Ke$ha's seven, as the US songstress notches up another week on top of the ARIA singles chart. On the albums side of things, it's another reality show contestant who's taken hold of Number One.

SINGLES : Ke$ha maintains her stranglehold on the Australian singles chart No.1 spot this week with her single 'Tik Tok'. And it came within 160 copies of notching up another week of 20,000 plus sales, having to settle instead for 19,841.
Australian Idol Stan Walker (and Sony) will be smiling, however - with only four days on sale, his winner's single 'Black Box' debuts strongly in the No.2 position with a respectable 15,533 sales. Jay Sean has to move 'Down' to accommodate Stan's track - with 11,072 sales of last week's No.2. Black Eyed Peas at No.4 and Lady Gaga at No.5 both enjoy more than 10,000 sales this week - 10,504 for the Peas and 10,096 for Gaga.
Jay-Z and Alicia Keys make it into the top ten with 'Empire State Of Mind' - 9084 fans snapped it up last week, while just outside the top ten, Orianthi continues to make waves, with her debut 'According To You' selling 5625 copies.
Guy Sebastian's up from No.33 and into the top 20 with his Jordin Sparks duet 'Art Of Love' off the back of last week's Idol finale - 5487 people purchased the song last week.
Michael Buble's star turn on the Idol stage also sees his single 'Haven't Met You Yet' surge - to No.17 - with 4638 sales.
Jason Derulo has a top 20 hit on his hands with 'Whatcha Say' (No.20 with 3880 copies) and US No.1 Owl City and his single 'Fireflies' continues it's ascendancy - up to No.27 this week (2683 sales).
The 'Phone' battle is on - Lady Gaga wins it with 'Telephone' (featuring Beyonce) debuting at No.29 (2538 sales), while Beyonce ftg. Lady Gaga's 'Video Phone' comes in down at No.40 (1812 sales).
Ricki-Lee pops in at No.46 with 'Hear No, See No, Speak No' (1576 sales) and the Temper Trap finally gets the chart recognition they so dearly deserved with their criminally overlooked single 'Sweet Disposition'. It's into the top 50 for the first time at No.48 (1531 sales).
Outside the top 50, there's a chart surge from David Guetta ftg. Estelle's 'One Love' - up 17 places to No.52 (1357) and the same jump from country starlet Taylor Swift and her new single 'Fifteen' - up 17 places to No.53 (1325).
David Guetta's Kelly Rowland collaboration moves up 12 places to No.56 after it's (terrible) use on the Idol finale, the Glee Cast have another top 100 hit - at No.58 with 'Defying Gravity' (1275 sales) and Mika's also back with some more post-Idol chart action with 'We Are Golden' (No.79 with 967 sales) and 'Rain' (No.90 with 832 sales).
Lady Gaga's 'Monster' debuts at No.80 (950 copies), Neighbours star Sam Clark debuts in the top 100 at No.82 with 'Broken' (937), Cascada's 'Fever' is in at No.84 (918 sales) and there's some post ARIAs chart action for Empire Of The Sun ('Walking On A Dream' back in at No.76 - 1005 sales), Ladyhawke ('My Delirium' in at No.93 - 814 sales) and Sarah Blasko ('We Won't Run' back in at No.96 - 769 sales).

ALBUMS : On the albums side of things, was there ever any doubt that it was going to be Susan Boyle's week? The Britain's Got Talent contestant bagged a respectable 26,474 sales of her debut album in it's first week on sale - and it may not be the last week we see the Scottish songstress on top.
Michael Buble also fared well - particularly with his amazing Idol showing last Sunday night. 'Crazy Love' did really well again - outselling it's nearest rival by almost two to one. 20,573 people bought MB's album last week.
Powderfinger had to settle for No.3 this week with their latest album 'Golden Rule' - just the one week on top for them, but another 10,762 copies to add to the sales count. The Twilight 'New Moon' soundtrack bounced back up to No.4 (8580 sales) and Lady Gaga rushed back into the top five at No.5, up an incredible 77 positions with 'The Fame'. Strangely 'The Fame Monster' is not being counted as a new album. Gaga sold 8174 copies last week.
The second highest new entry of the week comes courtesy of Barbadian singer Rihanna - 'Rated R' managed just 5010 copies to debut in the No.15 position, while 50 Cent's 'Before I Self Destruct' debuted in the No.19 spot on the back of 3606 sales.
Enya's best of came in at No.40 (1840) and the Priests debuted at No.48 (1609 sales).
Outside the top 50, Andrea Bocelli's Christmas album debuted at No.52 (1554 sales), Empire Of The Sun's album 'Walking On A Dream' benefitted from the repackage, up to No.54 (1541 sales) and Kate Ceberano's 'Merry Christmas' came in at No.61 (1446 sales).
Mika also re-entered the top 100 - at No.95 with 'The Boy Who Knew Too Much' following his Idol appearance.

OFFICIAL ARIA CHARTS