Possible Clues:

• Last of huntsmen considering ignoring first sound of horses
• Fault in hinge worsening finally, noise coming from behind stable door?
• Knight considering ignoring first sound from horse?
• Half the folks next door have drunk gin, making beastly noise
• Making the sound of a horse
• Noises heard around some tracks
• Whinnying
• Noisily denying what horse may be doing?
• Sound of punch maybe getting measure of boxer, perhaps changing direction at first
• By the sound of it, that's the way a horse is refusing