Dressage Riders, Equestrians and horse owners.
Almost everything! Whatever sounds good. Music courses through my veins. From Techno to Classical to Alternative and most areas in between. Lately Fiona Apple has been in my truck for quite a while.
Well Authors: Anything by Sylvia Loch, Alois Podhajsky, William Cavendish Newcastle, Aldous Huxley, Lewis Caroll, Nuno Oliveira, Edgar Allen Poe (yes, he wrote stories), Ivan Pavlov, Xenophon, Vladimir Nabukov and such.
All of the great riding masters. Those who have a TRUE understanding of equine psychology and/or how the equine mind works. Those who treat their horses fairly. Know when to walk away. Never allowing their temper or emotions to guide their actions toward horses. Those who are not willing to be unjust to meet a goal. Those who do not use questionable methods to speed training along, or pursue such means for lack of proper education. My heroes include those who do not use gadgets, those who school in a proper manner due to understanding. Those who reward even small efforts made by the horse and can allow the horse personal expression.