《Roof Top》的詞曲由歌手Katy Perry本人創作。以下是該歌曲的詞曲：
歌詞：
Verse 1：
Looking up at the stars in the sky
Trying to find my way back home
Trying to keep my feet on the ground
But I'm floating up above the clouds
Chorus：
On the roof top, I'm feeling free
Feels like I'm flying, up in the air
Trying to keep my feet on the ground
But I'm floating up above the clouds
Verse 2：
Trying to keep my eyes on the horizon
Trying to keep my mind on what's real
Trying to remember where I belong
But my heart's up above the clouds somewhere
Chorus：
On the roof top, I'm feeling free
Feels like I'm flying, up in the air
Trying to keep my feet on the ground
But I'm floating up above the clouds
Bridge：
It's alright, it's alright
To feel lost for a while
It's alright, it's alright
Just hold on tight and you'll be fine
Chorus：
On the roof top, I'm feeling free
Feels like I'm flying, up in the air
Oh, yeah, I feel so high up there
But I'm still floating above the clouds
Outro：
So high up there, I feel so free
Trying to keep my feet on the ground
But I'm still floating above the clouds somewhere...
曲譜：
C G Am F G Am F G Am G Am C G Am (重複)
[吉他]：E|3 4 5 6 | 5 4 3 2 | A|6 5 3 2 | 4 3 2 1 | 3 4 5 6 | 5 4 3 2 | 3 4 5 6 | C|7 G|7 Am|7 F|G Am|G G|Am C|G Am C G Am (重複)
這首歌是一首充滿自由和夢想的歌曲，描述了當我們感到迷茫或困惑時，仰望星空，感受自由和無拘無束的感覺。歌曲中還有對未知的探索和勇氣的表達。在這首歌中，Katy Perry的聲音充滿了活力和動力，是一首非常適合開心或者打氣的歌。
以上是我對《Roof Top》的歌詞和曲譜的個人解讀，希望能對您有所幫助。