A sound we knew we needed early on was a war horn for the Mongols. It had to be iconic and immediately recognizable so that a player could hear it nearby or in the distance and know “uh oh, there are Mongols nearby, and they may already know about me.”
In researching both samurai and Mongols we found many musical instruments used by Samurai to both communicate on the battlefield and attempt to instill fear in their opponents. We were fortunate enough to record some of these instruments including the horagai, a conch shell horn, at Komodahama during their yearly festival commemorating the first Mongol invasion of 1274. In all the research we did on the Mongols, however, I couldn’t find much in the way of music used for war purposes. Most of their music practices were either for celebrations such as marriage, played at imperial court, or just to pass the time. The Mongols were a nomadic people and while their main instruments were stringed instruments like the morin khuur they did also have horns, including some that were made of either wood or animal horn.
With all that knowledge, but a lack of access to traditional instruments, we opted to take some liberty in crafting a sound that we could tie to the Mongols, and would sound unique from the samurai horagai. In their native lands (and by extension the lands they conquered throughout China and the Korean peninsula) the Mongols used several domestic animals for food and drink. The horse was the most important delivering them everything from transportation to alcohol (airag, also known as kumis, is fermented horse milk), but they did also use yaks and cattle. Using this as a jumping off point, I found some steer horns and purchased one, hoping I could teach myself to blow through it and that it would make a sound unique from the conch shell. Fortunately it didn’t take long for the gasping breaths and pushed air to turn tonal and we recorded a bunch of variations on the war horns. We experimented with different calls to signify different enemy states, but in the end we opted to use it for a simpler enemy alert.
We processed the recordings to provide greater reflection and distance modeling the further away you go, and so we could fire off closer or more distant variants depending on what the in-game action called for. Here’s a short clip of recording some of those horns and then what they sounded like in-game:
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