i heard it yesterday; help!

i heard a song at ae.
there was no music video to it.
it was just the ae logo and boys and girls together or something.
i'm not sure.

but it went something like
'i did it for you'
or maybe i heard it wrong.

it was a girl's voice.

help!

im dying to know this song also please

um...I think that in the ad for the new spring stuff they play the piano song by meiko...try that?