rihanna:
10: love the way you lie #7, rude boy #15 , only girl (in the world)#47 , hard #49
09: live your life #18, run this town #31
08: take a bow #12 , disturbia #16, don't stop the music #17 , live your life #37
07: umbrella #2
06：SOS #19 , unfaithful #28
05: pon de replay #18


katy perry
10: california gurls#4, teenage dream #17
09: hot n cold #25, waking up in vegas #36,
08: i kissed a girl #14, hot n cold #36 ,

taylor swift:
10: mine #46
09: love story #5, you belong with me #11,
08: our song#41`, teardrops on my guitar #48

T.I.
09: dead and gone #12, live your life #18, whatever you like #40
08: whatever you like#15 , live your life #37
07: my love #26, i'm a flirt#49
06: what you know #47
05: soldier #26

flo rida
10: club can't handle me #40
09：right round #6
08: low #1

pink:
09: sober#38 , so what#45
08：so what #24
07: ur + ur hand #29

justin timberlake:
09: dead and gone #12
08: 4 minutes #23
07: give it to me #21, what goes around... comes around #22 , my love #26 , summer love #39
06: sexy back #9

timbaland
08: apologize #5, 4 мinutes #23
07: the way i are #18 , give it to me #21 , ice box #45
06：promiscuous #3

fergie:
08: clumsy #26
07: big girls don't cry #4 , glamorous #10 , fergalicious #19
06: london bridge #22

kanye west
09: heartless #9， knock you down #15, run this town #31 , love lockdown #44
08: american boy #39
07: stronger #27
06: gold digger #34
05: gold digger #6
04: slow jamz #16 , jesus walks #43, all falls down #47

ludacris
07：glamorous #10 , runaway love #35
06: money maker #35
05: oh #21 , love & friends #25
04: yeah #1 , splash waterfalls #42
03: gossip folks #43

lil wayne
10: down #41
09: down #20 , let it rock #32
08: lolipop #4 , got money #40 , a milli #43 , can't believe it #46
07: you #40 , make it rain #43

christina aguilera
01: lady marmalade #24
00: what a girl want #19 , come on over baby （all i want is you） #38 , i turn to you #42
99: genie in a bottle #7