You think you can catch all that you encounter
That mons are just dumb things you can train
But I know every rock and grass and bug type
Has base stats, has EVs, and can faint.

You think the only Pokémon who are Pokémon
Are the Pokémon who look and think like you
But if you catch all seven hundred and twenty-one 'mons
Then my friend, you've spent a whole lot of time on this game

Have you ever heard the Houndour cry to the blue corn moon?
Or asked the Purugly why he's ugly?
Can you sing with all the voices of the Meloetta?
Can you paint with all the colors of the Ho-Oh?
Can you paint with all the colors of the Ho-Oh?

Come run the hidden trails of Viridian Forest
Come taste the sunsweet berries of the earth
Come roll in all the Pokéballs all around you
And for once never wonder what they're worth

The rainstorm and the river are my brothers
The Swanna and the Oshawott are my friends
And we are all connected to each other
In a circle, in a hoop that never ends

How high does the Sudowoodo grow?
If you cut it down, then you'll never know
And you'll never hear the Houndour cry to the blue corn moon
For whether we play White or Black or X or Y
We need to sing with all the voices of the Meloetta
We need to paint with all the colors of the Ho-Oh

You can own all the badges and still
All you'll own is badges until
You can paint with all the colors of the Ho-Oh

Gotta catch them all!
Source: Notthedisneyyourelookingfor
~ Cinderella