need help with two !

i only know a line or two from the lyrics for both songs...

1: "who are you and what do you do that makes you think you're above me"

2: "who knows if I am ready or not, only time will tell."

both songs are sung by female singers
any help is greatly appreciated

thank you

Try the following songs

Song #1 Fergie - Pedestal
http://youtube.com/watch?v=1uyuB-9UVPQ

Song #2 Natasha Bedingfield - Who Knows
http://youtube.com/watch?v=7HcwcDc_yp8