Firework。

You don't have to feel, like a waste of space
You're original, cannot be replaced
If you only knew, what the future holds
After a hurricane, comes a rainbow

Maybe your reason why, all the doors are closed
So you could open one that leads you to the perfect room
Like a lightning bolt, your heart will blow
And when it's time you know

You just gotta ignite, the light, and let it shine
Just own the night like the 4th of July

很少聽Katy Perry的歌，可是我很喜歡她這首歌，還有這首MV。歌曲勵志，MV也十分勵志，看完之後，心中好像突然有個地方被安慰了的感覺，覺得自己也該做一些事。

真的，如果香港有多一點這種歌就好了。
還是其實只因為我沒有發現？