From WikiLemon

The Pokémon theme is the theme from the Pokémon anime. It was played by Lemon Demon at Lemonic Demonade 2007, although lovepotion#9 had to sing it because Neil didn’t know the lyrics.

Lyrics

I wanna be the very best
Like no one ever was
To catch them is my real test
To train them is my cause

I will travel across the land
Searching far and wide
Each Pokemon to understand
The power that’s inside

Pokemon - it’s you and me
I know it’s my destiny (Pokemon)
Oh - you’re my best friend
In a world we must defend

Pokemon - a heart so true
Our courage will pull us through
You teach me and I’ll teach you
Pokemon - Gotta Catch ‘Em All!

Every challenge along the way
With courage I will face
I will battle every day
To claim my rightful place

Come with me, the time is right
There’s no better team
Arm in arm we’ll win the fight
It’s always been our dream

Pokemon - it’s you and me
I know it’s my destiny (Pokemon)
Oh - you’re my best friend
In a world we must defend

Pokemon - a heart so true
Our courage will pull us through
You teach me and I’ll teach you
Pokemon - Gotta Catch ‘Em All!

Gotta Catch ‘Em All - yeah

Pokemon - it’s you and me
I know it’s my destiny (Pokemon)
Oh - you’re my best friend
In a world we must defend

Pokemon - a heart so true
Our courage will pull us through
You teach me and I’ll teach you
Pokemon - Gotta Catch ‘Em All!