First they went Boom-de-boom-de-boom-de-boom, and then, boom-de-de-boom-de-de-boom-de-de-boom, just like the tones of all bass fiddles.

But there was something else, too. There were overtones, so that John wasn't just playing a single note, but a whole chord with each beat. And the fullness, the depth of those incredible chords actually set my blood tingling. I could feel the tingling just as one can feel the vibration of a plucked guitar string.

I glanced at the cash customers. They looked like weary warriors getting their first glimpse of Valhalla. Gap-jawed and wide-eyed, they seemed in a kind of ecstatic hypnosis. Even the silent, bland-faced Martians stopped sipping their wine-syrup and nodded their dark heads in time with the rhythm.

I looked at The Eye. The transformation of his gaunt features was miraculous. Shadows of gloom dissolved and were replaced by a black-toothed, crescent-shaped smile of delight. His eyes shone like those of a kid seeing Santa Claus.

We finished On An Asteroid With You, modulated into Sweet Sally from Saturn and finished with Tighten Your Lips on Titan.

We waited for the applause of the Earth people and the shrilling of the Martians to die down. Then I turned to John and his fiddle.

"If I didn't hear it," I gasped, "I wouldn't believe it!"

"And the fiddle's so old, too!" added Hammer-Head who, although sober, seemed quite drunk.

"Old?" said John Smith. "Of course it's old. It's over five thousand years old. I was lucky to find it in a pawnshop. Only it's not a fiddle but a Zloomph. This is the only one in existence." He patted the thing tenderly. "I tried the hole in it but it isn't the right one."

I wondered what the hell he was talking about. I studied the black, mirror-like wood. The aperture in the vesonator was like that of any bass fiddle.