This song is about neutrinos which for those who don't know, they are sub-atomic particles. They are so small that they can easily pass through all solid objects including planet earth. They pass through the space in between the nucleus and the electrons in an atom. They're pretty cool.

Also, if you listen closely you will hear a bit about alternative energy

The lyrics are:
Verse
I want to dive in, to be airborne and subterranean
The sound I make is solid but invisible
Free floating and weightless, underground and in space
Through colours, darkness and lightness are weightless

Chorus
I am fine, I am free, come with me
I am fine, I am free, come with me
I am fine, I am free, come with me

Verse
Breathe easily, I'm so free, it's easy
And everything around has zero gravity
I'm floating and weightless, underground and in space
Through colours, darkness and lightness are weightless

Chorus
I am fine, I am free, come with me
I am fine, I am free, come with me
I am fine, I am free, come with me

Everything we do is new, everything we do is cool
Waves wind and sun are there for everyone
Give me your hand because I understand
I am fine, I am free, come with me

Hapi & the Lost Species