第一句是this song，是什么歌？

方大同的《sing along song》
歌词：
i wrote this song
it's not too long
cause i'm thinking about you
i wrote this song
maybe i'm wrong
to be called all about you

i don't know what you think about me
maybe you think nothing at all
but,maybe you could just lie to me
we could be in love, you see

let's sing a long song that not too long
it's when i think about you then i hear song
and you can sing alone
maybe if you won't want to
cause baby i wrote,i wrote this for you

i wrote this song
it's not too long
cause i'm the one who loves you
i wrote this song
this can't be wrong
i don't wanna smile without you

i just want to make you happy
maybe you want nothing at all
how i wish that you are mean to be
forever and the day with me

sing a long song that not too long
i