"Reunion Backnumber"是由Katy Perry演唱的一首歌曲，歌詞如下：
Verse 1:
We were young and foolish
Back then we didn't know any better
Now we're standing here together
I'm so glad we made it through all of this
Chorus:
Reunion backnumber
It's been a long time coming
But I'm here now and I'm not leaving
You're the one that I want, and the only one that I need
Verse 2:
Through all the highs and lows
And the times that I didn't think I could take it anymore
You were there with me, and I feel safe in your embrace
Chorus:
Reunion backnumber
It's been a long time coming
But I'm here now and I'm not leaving
You're the one that I want, and the only one that I need
Bridge:
I remember when we were young and in love
And now we're older, wiser, stronger together
And I know that we'll never be apart again
Chorus: (final)
Reunion backnumber (backnumber)
Now that we're here together (together)
Forever and ever, we'll stay this way (stay this way)
You're the one that I want, and the only one that I need (I need)