need to know song i heard in f21 @ chandler mall!

ive had this song stuck in my head since i heard it in forever 21 at chandler mall the other day and i have no idea what it is!! its a female artist and all i can sing from it is "la la la..la la la..la la la". Its not dancey or anything and doesnt really have a lot of background music, sounds like someone hitting keys on a piano..but i can't figure out what the other words are! please help me

Daniel Merriweather "Change" (feat. Wale)

?

aww no thats not it..thanks tho!