She smiles as he says it, but Martha's thoughts are far away. She's remembering a particular cave in the United States. There was a small band there and they played music. Plenty of folk music. Martha had sung along to the ones she knew and listened when she didn't. She had danced. It had almost felt like home...

A few days after moving on, she found out the Master had executed them all. Him and his blasted Spheres.

Shaking herself out of her memory, Martha clears her throat and tries to keep her voice light. "It helps people... forget momentarily. Forget their situation..."

The words aren't coming out right and she falls silent before she says more than she wants to.