I usually heard this song on the radio. But i don’t know the title at that time. I keep searching on Google and find the singer. It’s Sara Bareilles. With 6.7 million view on youtube. Quite nice.

Her video : http://www.youtube.com/v/7AbFcFCnsHY

About Sara Bareilles :

Sara Beth Bareilles (pronounced /bəˈrɛlɪs/; born December 7, 1979) is an American singer-songwriter and pianist. She achieved mainstream success in 2007 with the single “Love Song”, which brought her into the Top 5 on the Billboard pop charts. She has been compared to Delta Goodrem, Fiona Apple and Norah Jones despite her lack of formal training in either voice or piano.source : wikipedia

I’m gonna get her album