| LW | TW | MuzicBuff's Top 100 | Week Ending September 18th, 2009 | Genre | Wks on Cht | High Pos | |
| 1 | 1 | When Love Takes Over (3rd Week No. 1) | David Guetta featuring Kelly Rowland | Dance | 13 | 1(3) | |
| 3 | 2 | Her Diamonds | Rob Thomas | Pop | 18 | 2 | |
| 5 | 3 | Redefinition | Infernal | Dance | 19 | 3 | |
| 8 | 4 | Permanent | David Cook | Pop | 13 | 4 | |
| 4 | 5 | I Could Break Your Heart Any Day Of The Week | Mandy Moore | Pop | 24 | 4 | |
| 7 | 6 | Evacuate The Dancefloor | Cascada | Dance | 10 | 6 | |
| 2 | 7 | Did You See Me Coming? | Pet Shop Boys | Dance | 16 | 2 | |
| 10 | 8 | Nineteeneightyfive | Storm Lee | Pop | 17 | 8 | |
| 12 | 9 | Since Tina Moved In (Acoustic Version) | James Collins | Pop | 11 | 9 | |
| 11 | 10 | The Climb | Miley Cyrus | Pop | 22 | 10 | |
| 14 | 11 | Already Gone | Deborah Gibson | Pop | 19 | 11 | |
| 6 | 12 | Battlefield | Jordin Sparks | Pop | 19 | 1(5) | |
| 13 | 13 | Touch My Hand | David Archuletta | Pop | 20 | 13 | |
| 19 | 14 | Million Dollar Billl | Whitney Houston | Pop | 3 | 14 | |
| 18 | 15 | Love Love Love | Agnes | Pop | 20 | 15 | |
| 17 | 16 | Right Here Right Now | BWO | Dance | 12 | 16 | |
| 9 | 17 | Please Don't Leave Me | P!nk | Pop | 21 | 9 | |
| 20 | 18 | The Freshmen | Jay Brannan | Pop | 10 | 18 | |
| 21 | 19 | Fuck You | Lily Allen | Pop | 19 | 19 | |
| 22 | 20 | When Tomorrow Comes | MLTR | Pop | 18 | 20 | |
| 16 | 21 | Waking Up In Vegas | Katy Perry | Pop | 15 | 9 | |
| 23 | 22 | You Belong With Me (Top 40 Mix) | Taylor Swift | Pop | 7 | 22 | |
| 24 | 23 | Laugh | Lisa Donnelly | Rock | 12 | 3 | |
| 30 | 24 | Celebration | Madonna | Pop | 5 | 24 | |
| 28 | 25 | Dance Floor Dance Whore (Majik Boys Radio Edit) | Evan Cowden | Dance | 13 | 25 | |
| 27 | 26 | You Keep Me Up Till 3 O'Clock | Andy Stedman | Rock | 11 | 26 | |
| 15 | 27 | I'm Just Here For The Music | Paula Abdul | Pop | 19 | 2 | |
| 29 | 28 | Sad Song (Radio Edit) | Blake Lewis | Pop | 7 | 28 | |
| 32 | 29 | Already Gone | Kelly Clarkson | Pop | 5 | 29 | |
| 25 | 30 | I Look To You | Whitney Houston | R&B | 6 | 25 | |
| 31 | 31 | Paparazzi | Lady GaGa | Pop | 11 | 31 | |
| 33 | 32 | Do it 2nite (Muzicbuff's SpekrFreks Edit) | DUDE-aTOMic! & SpekrFreks | Pop | 9 | 32 | |
| 41 | 33 | Evil (Dave Audé Radio) | Matt Goss | Rock | 5 | 33 | |
| 35 | 34 | No Surprise | Daughtry | Pop | 17 | 34 | |
| 37 | 35 | Before He Cheats (Almighty Single Mix) | Jackie '0' | Dance | 17 | 35 | |
| 38 | 36 | Radio Radio | Brooke White | Pop | 10 | 36 | |
| 26 | 37 | Chocolate Box | Prince | Pop | 21 | 8 | |
| 50 | 38 | Ayo Technology | Milow | Pop | 6 | 38 | |
| 42 | 39 | Listen To the Darkside | Charlie Mars | Rock | 8 | 39 | |
| 39 | 40 | Obsessed | Mariah Carey | Pop | 8 | 39 | |
| 45 | 41 | Ride To Heaven | Ari Gold | Dance | 10 | 41 | |
| 43 | 42 | Back to the 80's | Aqua | Dance | 10 | 42 | |
| 44 | 43 | Fallin' for You | Colbie Caillat | Pop | 7 | 43 | |
| 47 | 44 | Be Alright (Boris Blind Faith Radio) | Kristine W. | Dance | 6 | 44 | |
| 52 | 45 | Said It All | Take that | Pop | 3 | 45 | |
| 34 | 46 | Infected | Right Said Fred | Pop | 24 | 3 | |
| 49 | 47 | I Don't Believe in Hate (Drip Drop) (Pathos V2 Radio Edit) | Amber | Rock | 7 | 47 | |
| 46 | 48 | Heart On My Sleeve | Michael Johns | Pop | 15 | 46 | |
| 48 | 49 | Fear of Flying | Kimberly Caldwell | Country | 16 | 48 | |
| 36 | 50 | Love Resurrection | Aurora featuring Amanda Wilson | Dance | 29 | 1(3) | |
| 51 | 51 | Underestimated (Album Mix) | Jennifer Paige | Pop | 16 | 51 | |
| 55 | 52 | I Am Afraid | Kyle Riabko | Rock | 11 | 52 | |
| 59 | 53 | Skipper Dan | Weird Al Yankovic | Pop | 6 | 53 | |
| 70 | 54 | Straight Through My Heart | Backstreet Boys | Pop | 3 | 54 | |
| 40 | 55 | Just Go | Lionel Richie | Pop | 22 | 10 | |
| 58 | 56 | Last Train Home | Ryan Star | Pop | 9 | 56 | |
| 61 | 57 | Where Did I Lose Your Love? | Journey | Pop | 8 | 57 | |
| 60 | 58 | Thank You | Diana DeGarmo | Country | 10 | 58 | |
| 72 | 59 | Had It All | Katharine McPhee | Pop | 2 | 59 | |
| 56 | 60 | All In My Head | Nick Lachey | Pop | 15 | 54 | |
| 63 | 61 | Hey, Soul Sister | Train | Pop | 4 | 61 | |
| 62 | 62 | Whatcha Doin' To Me | Brian Kent | Dance | 20 | 58 | |
| 71 | 63 | This Is Your Song | Ronan Keating | Pop | 4 | 63 | |
| 66 | 64 | Everything You Need | Mike Rickard | Pop | 4 | 64 | |
| 85 | 65 | Let's Just Fall In Love Again **BIGGEST JUMP** | Jason Castro | Pop | 2 | 65 | |
| NEW | 66 | I Gotta Feeling (David Guetta Radio Mix) **HIGH DEBUT** | Black Eyed Peas | Dance | 1 | 66 | |
| 54 | 67 | Takin' Back My Love | Enrique Iglesias featuring Sarah Connor/Ciera | Pop | 21 | 31 | |
| 67 | 68 | Do You Want My Love | Groove-State | Dance | 10 | 67 | |
| 74 | 69 | Zero Gravity | David Archuleta | Pop | 9 | 69 | |
| 80 | 70 | Sexy Bum | Right Said Fred | Pop | 2 | 70 | |
| 53 | 71 | At First Sight | Jay Brannan | Pop | 26 | 5 | |
| 69 | 72 | Want | Adam Lambert | Pop | 5 | 68 | |
| 57 | 73 | Tell Me The Worst | Will Young | Pop | 9 | 54 | |
| 75 | 74 | You're My World | Emilia | Pop | 13 | 74 | |
| 84 | 75 | While You See a Chance (Mark Picchiotti Summer Radio) | Matt Zarley | Dance | 4 | 75 | |
| 91 | 76 | S.O.S. (Let The Music Play) | Jordin Sparks | Pop | 2 | 76 | |
| 79 | 77 | Sweet Dreams (Steve Pitron & Max Sanna Edit) | Beyoncé | R&B | 4 | 77 | |
| 87 | 78 | Beautiful Girls (Single Version) | Five Times August | Rock | 5 | 78 | |
| 65 | 79 | Shark In The Water (Louis La Roche Radio Edit) | V.V. Brown | Pop | 8 | 62 | |
| NEW | 80 | Haven't Met You Yet (Album Version) | Michael Bublé | Pop | 1 | 80 | |
| 99 | 81 | Life Is Okay | Michael Johns featuring Brooke White | Rock | 25 | 64 | |
| 64 | 82 | Believe Again | Brinck | Pop | 27 | 5 | |
| 76 | 83 | Good Outweigh The Bad | Elliott Yamin | Pop | 6 | 76 | |
| 90 | 84 | Standing On My Own | Danielle Bollinger, DJ Russ Harris | Dance | 14 | 84 | |
| 93 | 85 | Whistle Song | Joe Settineri | Rock | 3 | 85 | |
| 68 | 86 | Cry | Michael Jackson | Pop | 12 | 9 | |
| 82 | 87 | If You Don't Mean It | Jon Peter Lewis | Pop | 11 | 70 | |
| 89 | 88 | In for the Kill | La Roux | Pop | 3 | 88 | |
| 96 | 89 | Smile | Uncle Kracker | Rock | 2 | 89 | |
| 88 | 90 | (I Wanna) Testify | Lou Gramm | Rock | 14 | 81 | |
| 73 | 91 | Mad World (American Idol Studio Version) | Adam Lambert | Pop | 24 | 2 | |
| 77 | 92 | No Boundaries | Kris Allen | Pop | 18 | 1(2) | |
| 98 | 93 | Can't You Feel It | Elize | Dance | 7 | 93 | |
| NEW | 94 | Seventies | Lauren Wolf | Dance | 1 | 94 | |
| 78 | 95 | Heartless (American Idol Studio Version) | Kris Allen | Pop | 19 | 1(2) | |
| 81 | 96 | Sex On Fire | Kings Of Leon | Rock | 5 | 79 | |
| 92 | 97 | Radar | Britney Spears | Pop | 5 | 85 | |
| NEW | 98 | I Love The Sunshine (Beltek Radio Edit) | Alan Connor | Dance | 1 | 98 | |
| 83 | 99 | Broken Strings | James Morrison & Nelly Furtado | Pop | 14 | 78 | |
| 86 | 100 | I Do Not Hook Up | Kelly Clarkson | Pop | 22 | 17 | |
| LW | TW | MuzicBuff's CHARTBOUND | Week Ending September 18th, 2009 | Genre | Wks on Cht | ||
| NEW | 1 | Cowboy Casanova | Carrie Underwood | Country | 1 | ||
| 4 | 2 | Love Action (I Believe In Love) | Alan Connor | Pop | 4 | ||
| 3 | 3 | A Thousand Miles | David Archuleta | Pop | 11 | ||
| 1 | 4 | Change Is On The Way | Sam Harris | Pop | 12 | ||
| NEW | 5 | Didn't You Know How Much I Loved You | Kellie Pickler | Country | 1 | ||
| 7 | 6 | Jealous Of My Boogie (Ruru & Rozy Disco) | RuPaul | Dance | 10 | ||
| 5 | 7 | The Place For My Heart (DJ Jst Radio Edit) | Danielle Bollinger | Dance | 7 | ||
| 9 | 8 | Sky Is The Limit | Ola | Pop | 6 | ||
| NEW | 9 | Love Comes | Bananarama | Pop | 1 | ||
| 6 | 10 | Six Foot Teddybear | Richie McDonald | Country | 10 | ||
| 10 | 11 | One 2,3 Four | Martin Solveig | Dance | 9 | ||
| 22 | 12 | Sexy Bitch (Feat. Akon) | David Guetta | Dance | 3 | ||
| NEW | 13 | I Want to Know What Love Is | Mariah Carey | Pop | 1 | ||
| 11 | 14 | This Used To Be The Future | Pet Shop Boys & Phillip Oakey | Pop | 6 | ||
| 12 | 15 | Fmlyhm | Seether | Rock | 15 | ||
| 14 | 16 | There She Goes | Sasha | Pop | 4 | ||
| 16 | 17 | Sing Along (Radio Edit) | Per Gessle | Pop | 8 | ||
| 15 | 18 | Lose You | Peaches | Rock | 9 | ||
| 20 | 19 | Bullet Proof | La Roux | Pop | 5 | ||
| NEW | 20 | Happy | Leona Lewis | Pop | 1 | ||
| 17 | 21 | Diamonds to Dust | Dan Fogelberg | Pop | 5 | ||
| 13 | 22 | It's A Business Doing Pleasure With You | Tim McGraw | Country | 6 | ||
| 18 | 23 | Red | Daniel Merriweather | Soul | 6 | ||
| 25 | 24 | Love Sux | Linda Teodosiu | Pop | 3 | ||
| 21 | 25 | Somebody Needs A Hug | Keith Anderson | Country | 17 | ||
| 29 | 26 | Beautiful People | Pet Shop Boys | Pop | 2 | ||
| 33 | 27 | Funhouse | P!nk | Pop | 2 | ||
| 24 | 28 | I Wanna | The All-American Rejects | Pop | 5 | ||
| 26 | 29 | Kiss Me Back (Cry Tonight) (Jeff Martens Radio Edit) | Kim Sozzi | Electronica | 3 | ||
| 30 | 30 | Love Struck (Dave Aude Radio) | V Factory | Dance | 16 | ||
| 23 | 31 | Get Sexy | Sugababes | Pop | 5 | ||
| 39 | 32 | New In Town | Little Boots | Pop | 2 | ||
| 27 | 33 | Stay The Night | Alcazar | Pop | 17 | ||
| 36 | 34 | Losing My Religion | Colton Ford | Dance | 2 | ||
| 31 | 35 | American Ride | Toby Keith | Country | 3 | ||
| 32 | 36 | Everything You Are | Jennifer Armour | Pop | 10 | ||
| 28 | 37 | The Lovers Are Losing | Keane | Pop | 16 | ||
| 34 | 38 | Use Somebody | Brooke White | Pop | 2 | ||
| 35 | 39 | 80's Baby | Karl Wolf | R&B | 3 | ||
| NEW | 40 | Beat Again (Radio Edit) | Jls | Pop | 1 | ||