Katy Perry

The top 20 singles and albums for the week ended March 7, supplied by the Recording Industry Association, with last week's position in brackets.

SINGLES:

1 (1) If We Ever Meet Again - Timbaland feat. Katy Perry

2 (7) You Got Me - J. Williams feat. Scribe

3 (3) Hey Soul Sister - Train

4 (2) In My Head - Jason DeRulo

5 (11) Rude Boy - Rihanna

6 (8) Sun Goes Down - Nesian Mystik

7 (4) Memories - David Guetta feat. Kid Cudi

8 (16) Baby - Justin Bieber feat. Ludacris

9 (9) Whatya Want From Me? - Adam Lambert

10 (5) Cruel - Dane Rumble

11 (6) Black Box - Stan Walker

12 (10) Art Of Love - Guy Sebastian feat. Jordin Sparks

13 (23) The Only Exception - Paramore

14 (13) Infinity 2008 - Guru Josh Project

15 (15) Just A Little Bit - Kids of 88

16 (20) Blah Blah Blah - Ke$ha feat. 3Oh!3

17 (12) One Time - Justin Bieber

18 (21) Rock That Body - Black Eyed Peas

19 (14) Bad Romance - Lady Gaga

20 (22) Try Sleeping With A Broken Heart - Alicia Keys

ALBUMS:

1 (1) Holy Smoke - Gin

2 (3) I Dreamed A Dream - Susan Boyle

3 (4) The Fame: Monster - Lady Gaga

4 (2) Recollection - kd lang

5 new Jason DeRulo - Jason DeRulo

6 (5) Introducing - Stan Walker

7 (11) Reunited: The 50th Anniversary Album - Cliff Richard And The Shadows

8 (6) Soldier Of Love - Sade

9 (14) Brand New Eyes - Paramore

10 (20) Young Love: Collectors Edition - J. Williams

11 (28) This Is It - Michael Jackson

12 (8) Glee: The Music Vol. 2 - Glee Cast

13 (9) Fearless: Deluxe Edition - Taylor Swift

14 (7) Alvin And The Chipmunks: The Squeakquel OST - Alvin And The Chipmunks

15 (12) American VI: Ain't No Grave - Johnny Cash

16 (13) Animal - Ke$ha

17 (16) The E.N.D. - Black Eyed Peas

18 (17) The Resistance - Muse

19 (10) Hits - Seal

20 (19) For Your Entertainment - Adam Lambert