American singer and songwriter Bonnie McKee has co-written eight number-one singles, which have sold more than 30 million copies worldwide combined.
An album was due for release in spring of 2014 but, by the end of the year, had not yet materialized.
[1] McKee has collaborated with pop singer Katy Perry, and the pair have written five of Perry's number-one singles together: "California Gurls", "Teenage Dream", "Last Friday Night (T.G.I.F.
She co-wrote five songs on Britney Spears' seventh studio album Femme Fatale, including "Hold It Against Me", which topped the Billboard Hot 100.
McKee has also co-written songs that have been recorded by Christina Aguilera, Kelly Clarkson, Cher, Carly Rae Jepsen and Ellie Goulding among others.