It's not too hard to figure out some of these, especially since the vocal performances from the singer is identical to the person the song was probably originally intended for - some of these are guesses though!

Kelly Clarkson - Breakaway: Originally intended for Avril Lavinge (co-wrote the song)
Kelly Clarkson - Miss Independent: Originally intended for Christina Aguilera (co-wrote the song)
The Corrs - Breathless: Originally intended for Shania Twain (song produced by Mutt Lange)
Rachel Stevens - Sweet Dreams my L.A Ex: Originally intended for Britney Spears (co-written by Cathy Dennis)
Jennifer Lopez - Play: Originally intended for Christina Milian (Milian wrote the song)
LL Cool J Ft Jennifer Lopez - Control Myself: Jennifer's part orignally intended for Fergie of BEP)
Jennifer Lopez - Ryde of Die: Recorded and Intended for Brandy
Britney Spears - Toxic: Orignally intended for Kylie Minogue (highly rumored: written by Cathy Dennis)
Mary J Blige Ft Ja Rule - Rainy Dayz: Intended for TLC

That one is just too obvious. The lyrics sound so stupid coming from Mary..

Monica - What Hurts The Most (intended for Brandy)

Britney Spears - Baby One More Time; originall intended for TLC

Kelis- Perfect Day was No Doubt's but they gave it to her.

Jennifer Lopez' "Get Right" (intended for Usher)
Amerie's "1 Thing" (intended for Beyoncé)
Ludacris' "The Potion" (intended for Jay-Z)
Ray J's "Unbelievable" (intended for B2K)

Mary J. Blige & Ja Rule - Rain Dayz (TLC)
Britney Spears - Milkshake (Kelis)

Either or both "I'm A Slave 4 U" and "Boys" were meant for Janet Jackson.

I totally forgot to post this one!

Mya - Take A Picture: Originally intended for Pink (co-wrote the track)

I'm sorry but theres no way Usher coulda pulled off Get Right haha

but it does , usher wrote it and did the song before jenifer did it and now he still have royalties for the song

Kelly Clarkson - Since U Been Gone: Orignally intended for Hilary Duff.
but i think kelly does it better.





i'd like to hear kelly singin' 4EVER - The Veronicas

.....whoa.

originally intended for pink, Hilary Duff thought about it. same with Gone. thank god Kelly took them

All About Us - TATU (Written by The Veronicas)

omg i cant imagine hilary singin since u been gone

gone is my favorite music in 'breakaway'!
hilary woudn't sing so perfect as kelly.

yeah i would like to hear kelly sing 4ever...

Whats Going On - Cassie Donavan (The Veronicas wrote it)
Faded - Kate Dearaugo (The Veronicas wrote it)

4ever - The Veronicas (hilary was planning on taking it as well good tihng she didnt tho would have ruined the song)

Hilary Duff - fly (Kelly Clarkson)

I am not sure about "Since U Been Gone," but I believe it was "Gone" that was intended for Hilary Duff. Either way, it would have been a distaster.

Xtina Milian would have killed Play!