Lure out the river spirit

Minutes later, you have all four river elf girls lined up on a table with their butts in the air.

"Willow's butt is my snare drum," you say. "Wide, but firm, with a nice sound to it. Check out this drumroll..."

You beat out a rolling rhythm on Willow's ass cheeks. She buries her face in her arms in the hopes that nobody recognizes her.

"Nimbus and Shimmer, you're my bongos," you say. They yelp as you slap a beat on their butts. "Shimmer, could you flex a little bit? You're sounding a touch flat. And Limber..."

"Oh, god..." says Limber.

"...you're my cymbals." You give her ass a good slap. "I wanted to say you were my tom tom, since you're a tomboy, but you have a total cymbal-crash spanker."

"Got any room for your favorite bass drum?" says Daisy, turning around and cupping the underside of her posterior for effect. "I wasn't going to offer, but I can see that we've got to show these river elves what a true booty looks like."

"Yeah, go ahead and hop up!" you say.

The dark elf giggles and climbs onto the table, shouldering the river elves aside to take her place in the middle. Now you have five delicious naked ladies in front of you, butts up, faces down, ready for your drum solo.

"And this, ladies, is how we summon a river spirit..."