《sister s noise》的詞曲由艾薇兒·拉維尼完成，以下是歌曲的詞曲：
Sister Sister, sister Sister
Everybody's got their own special little sound
Some are bells, some are drums
Some are violins and violas stringed
Everybody's got their own special little sound
Yeah, yeah, yeah, yeah
My sister's noise, it makes me smile
She's a jazz pianist, and she's only nine years old
I guess she really doesn't have to go to school
And she really doesn't need no air conditioner, oh no
My sister sings in the shower when she's feeling lucky
And she's really good at hump day, if you know what I mean
But she really loves the song I wrote for you girls
Yeah, yeah, yeah, yeah
Chorus:
Sister Sister, sister Sister
She's a dreamer and a maker of her own little plans
And I love her for it just the way she is
She's a beautiful thing, oh oh oh oh oh oh oh oh oh
Yeah, yeah, yeah, yeah, yeah, yeah, yeah
I wrote a song for my baby girl
I wrote a song for my brother and his girlfriend too
And even though it might sound a bit odd to you girls
It's a song of love for everyone of you girls and guys. (Repeat Chorus)
Now it might be a little different from what you hear every day but this is real from my heart. The one that I hold most dear and every line of it means just so much more because of all that you mean to me. It was pure inspiration. So girls don't be shy. Just sing along and let your sisters know that they are loved. (Repeat Chorus)