Swamped

You suppose you should get this package delivered, and to that end, you should figure out where Marshall is.

"Have you seen Marshall, incidentally?" you ask the grebling guards.

"That was the human talking to Rivers earlier, right?"

"Yeah, I think I caught a glimpse of them talking just before we left," you say.

"We took over about ten minutes after that conversation ended. But I couldn't say where either of them went. Might have gone back to their tents, it's getting kind of late after all."

"I guess that's worth checking out. Thanks."

You start heading towards the tent they laid out for Rivers, but then you hear something. Music?

Yeah, that's music all right. Weirdly familiar, at that. Maybe Strings played it once or twice?

You decide to investigate. It seems to be coming from the tent with a holy symbol on it.

Inside is a grebling - you're not sure of his name - playing on what looks like a pipe organ, only much more complicated. There's also an enormous machine, whose purpose you can't even begin to fathom.

The grebling at the organ turns around and glances at you.

"I only do services for Reth," he says. "If you want prayer or guidance on behalf of other gods, you've come to the wrong place."

"No, I was just wondering about the music," you say. "Was that a prayer song you were just playing?" It seems unlikely; Strings never struck you as all that devout.

"Nah," says the grebling. "I was just making sure the pipes were clear."

"What's that song, then? It sounded a little familiar."