Fergie - 'Big Girls Don't Cry'
Beyoncé - 'If I Were a Boy'
Nicole Scherzinger - 'Don't Hold Your Breath'
Ricky Martin - 'Drop It On Me'
BoA - 'Touched'
Selena Gomez - 'A Year Without Rain'
Jessie J - 'Who You Are'
Demi Lovato - 'Skyscraper'
One Direction - 'Taken'
Carly Rae Jepsen - 'Beautiful' (feat. Justin Bieber)
John Legend - 'All of Me'
Hilary Duff - 'Chasing the Sun'
Koda Kumi - 'V.I.P.'
Madonna - 'Rebel Heart' tracks
This is really old. She was in the studio recording and writing the song with Ty Dolla Sign (maybe he's featured?), Toby Gad and Rachel Rabin in May 2012:
They could have tested it on other platforms like HAC before pulling it completely. It's not a bad song at all - it was just handled in a messy way 
It's strictly for Top 40 and Rhythmic
I'm going to be the next hip hop star like Iggy. 