Chromated copper arsenate.

The chromatic scale consists of 12 tones.

Are you nuts? The chromatism is...

But our EPA contact suggested we search for sodium chromate?

Then he makes this chromatic marimba out of these rocks.

Now, If I play a chromatic scale there's no measurable response.

Now, if I play a chromatic scale... ...there's no measurable response.

All composers leave a chromatic DNA inside their compositions, their music.

There are 12 tones in the chromatic scale. ♪ I know that because I'm a musical genius ♪

But our EPA contact suggested we search for sodium chromate? Of course. It's a sister compound.