Speed of sound

Một bài hát của Coldplay . Mình thấy nghe cũng hay , nhưng một câu đố nhỏ nhé : ngoài ước mơ của một nhà thám hiểm , bài hát còn nói về cái gì nữa ? ( Chú ý : cái gì )

Lyrics :
How long before I get in?
Before it starts, before I begin?
How long before you decide?
Before I know what it feels like?
Where To, where do I go?
If you never try, then you'll never know.
How long do I have to climb,
Up on the side of this mountain of mine?

Look up, I look up at night,
Planets are moving at the speed of light.
Climb up, up in the trees,
every chance that you get,
is a chance you seize.
How long am I gonna stand,
with my head stuck under the sand?
I'll start before I can stop,
before I see things the right way up.

All that noise, and all that sound,
All those places I got found.
And birds go flying at the speed of sound,
to show you how it all began.
Birds came flying from the underground,
if you could see it then you'd understand?

Ideas that you'll never find,
All the inventors could never design.
The buildings that you put up,
Japan and China all lit up.
The sign that I couldn't read,
or a light that I couldn't see,
some things you have to believe,
but others are puzzles, puzzling me.

All that noise, and all that sound,
All those places I got found.
And birds go flying at the speed of sound,
to show you how it all began.
Birds came flying from the underground,
if you could see it then you'd understand,
ah when you see it then you'll understand?

All those signs, I knew what they meant.
Some things you can invent.
Some get made, and some get sent,
Ooh?
Birds go flying at the speed of sound,
to show you how it all began.
Birds came flying from the underground,
if you could see it then you'd understand,
ah, when you see it then you'll understand?

Đoán thử câu hỏi ở đầu nhé !