Scanning the area, Jason saw no other people around. Would there be time to run and fetch someone else? He thought of the Warner Bros. cartoon about the singing and dancing frog that clammed up whenever witnesses were present.

Leaning his stomach against the top of the railing, Jason teetered far over the metal bar, baffled by the beckoning melody. If he could get an ear closer to the water, he could confirm whether the music was really coming from down there. The hippo remained motionless.

As his ear descended toward the rippling surface, a powerful sensation of vertigo swept over him. Jason overbalanced, lost his grip, and plunged head foremost into the pool above the massive hippo. As if this were the chance for which the lethargic beast had waited its entire captive existence, the hippopotamus surged upward with jaws agape, the music chiming louder than ever.

Before Jason could react, his hands were grasping at a slimy tongue, and his face was sliding against a greasy surface. Sprawled on his belly, he raced along a dark, slippery tunnel. No creature was this big! What was happening? In counterpoint to his distress, melodic music rang clearly as he sloshed along the humid corridor. He tried to brace himself against the rubbery sides to slow his slide but failed, until his arms and head suddenly emerged from an opening in the side of a dying tree, near a river lined with ferny vegetation.

Night had inexplicably fallen. A silver path of moonlight trembled on the water. The music he had heard was coming from a wide raft drifting on the lazy current. He squirmed out of the gap, his coveralls drenched from the plunge into the hippo tank, and turned around to inspect the hollow inside of the tree. The inner walls felt moist and rotten. He could locate no opening save the one through which he had emerged and an aperture directly overhead, at the top of the hollow trunk, through which he could see stars.

This was impossible! Where was the tunnel? How had it led to this tree? Where was the hippo? Where was the zoo? There was no river half this wide in his whole town! Jason blinked, wondering if the blow to his head at the batting cage had knocked him out.

Bracing himself against the interior walls of the trunk, he managed to scramble up until he came out at the top, twelve feet above the ground. Still no sign of a hippopotamus or of the Vista Point Zoo. He did, however, command a clear view of the raft, which had drawn up even with his current location.

Small colored lanterns illuminated the vessel. A narrow man in a pale outfit hammered at a xylophone. A stocky woman blew on a curved flute. Another man alternated between racks of chimes and a tall set of bongos. A flabby woman with at least five chins plucked a strangely shaped stringed instrument. A short figure held an enormous brass horn with tubing that snaked around his broad chest and rested on his shoulders.

The raft swept behind a screen of weeping willows before Jason could apprehend more details, though a few other musicians tinkered with a variety of less discernable instruments. The haunting music permeated the air, floating to him across river and riverbank.

Jason’s head swam with questions. How had he gotten here? Why was it nighttime? How would he get back to the zoo? Falling into the hippo tank was one thing—careless but possible. Passing through the mouth of a hippopotamus into a tunnel slide and coming out of a hollow tree beside a river was tougher to process. Everything he had ever assumed about reality had just been turned inside out. But his surroundings seemed so tangible. There was no denying his senses. He felt the damp, splintery texture of the bark beneath his hands; he smelled the faint odor of decay rising from a standing pool at the river’s edge. Oily sap clung to his skin. He sniffed his palm, and the pungent resin reminded him faintly of Fig Newtons and black licorice, but he had never smelled anything quite like it.

Jason sighed. He knew the difference between the vague impressions of a dream and the sharper sensations of wakeful consciousness. He certainly felt awake. Yet he could not help doubting the unreal situation. Perhaps this was simply a vivid dream. After all, a baseball had bashed him in the head. He could still be lying unconscious in the batting cage. Then he shivered. Maybe he had died—there could have been a clot in his brain. Or maybe the hippo really had eaten him. Could he have crossed over to some sort of afterlife?

He scratched his chin. The sensation felt genuine. His wet clothes clung authentically. His head throbbed gently, and he remained mildly dizzy. Would the symptoms of a concussion persist in a dream? In the afterlife? He listened to the music and the gentle lapping sounds of the river. Wherever he was, whatever the explanation, he remained alert, and he was immersed in a vivid, perceivable environment. He surveyed the vicinity—the mossy trees along the river, the shrubs below, the insects buzzing nearby—mildly astonished at how acceptable the impossible became once it had transpired.

Jason promptly discovered that his immediate problem would be getting down. He sat awkwardly on the lip of the tall hollow trunk, trying to position himself so he could descend as he had climbed. He couldn’t seem to get it right, and he began to experience light-headedness at the thought of sliding down the interior of the trunk, accumulating splinters, before breaking an ankle at the bottom. Attempting to climb down the exterior of the tree appeared even less inviting. Why was climbing up always so much easier than climbing down?

Finally, after many hesitant twistings and turnings, he lowered himself back into the trunk in a position where he could brace himself. Once he had squirmed down to the bottom, Jason exited the hollow tree, glad for the moonlight, and decided to follow the raft, since it represented the only trace of civilization.

Shortly he came abreast with the music, though foliage along the riverbank hindered his view of the vessel. Jason trotted ahead until he found a gap, and he discovered a little hunched figure squatting on a log.

“Hello,” Jason said.

A head whipped around. The face belonged to a kid, maybe ten or eleven. As the boy shifted, Jason realized he had a sizable hump on his back. “Why are you sneaking up on me?” the boy snapped.

“I’m just following the raft,” Jason replied defensively.

Looking calmer, the boy scooted over on the log to make room. Jason took a seat.

“What’s with the musical raft, anyhow?” Jason asked.

The boy turned a skeptical eye. “You joking? That’s the funeral dirge of the Giddy Nine, the best musicians around. Most folks are waiting for them down by the falls. That’s the only part they care about. But I like to hear the music. It’ll be the last time.”

“They’re headed for a waterfall?” Now that he listened for it, Jason could hear the distant roar.