Just finally, since you've brought it up: how is the new material coming along?

You don't know what's in it, where the material comes from.

We can reach back behind it and find out where its materials come from.

"We all want to know where the material came from," she said.

Could she explain how this material came to be where it was?

The material I will present to you comes from a variety of sources.

Others weren't, but nevertheless made it in as old material came to light.

Getting material for his songs has always come easily, he said.

The story of how this material came to light is itself an intriguing one.

For example, what is the fat content of the food with which the material comes into contact?