Douglas Alpenstock wrote:A little Barry White, perhaps? 
I don't think they need the encouragement.
I like to leave the local classical station on for our Flemish Giant whenever we're not home, or when we're doing other things around the house and want her to loaf on a chair and relax. The intermittent strange people voices barely register as an ear twitch.
I have also played natural soundscapes for her, designed for human relaxation. I didn't notice a difference in her reactions between baroque, classical, romantic, or contemporary chamber and orchestral works and those of most natural forest, woodland, or meadow soundscapes, except for two: when a red-tailed hawk scream played in the meadow soundscape, she bolted upright from a completely stretched-out, flopped-on-her-side relaxed posture; the same happened with a nighttime woodland soundscape, where an owl hoot interrupted the crickets.
So I like to avoid anything that contains triggers to her natural defenses against predation. Some material she likes that others might find surprising is Jimi Hendrix (her favourite album is
Are You Experienced) but honestly will loaf to anything psychedaelic with the whole wall of sound treatment, and anything multi-layered and trippy.
Oh, and she thumps when we're not playing the right music. I shit you not.
-CK
A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
-Robert A. Heinlein