A debut album usually starts with a songwriter, a producer, and a backing band. But Los Angeles singer-songwriter Mikayla Khramov is taking a very different route — by featuring a rescue horse who, as USA Today reported, uses his nose to brush across guitar strings. Her unlikely musical partnership with the rescue horse, Yupia, emerged from volunteer work at a horse rescue in Moorpark, California, where Khramov discovered that he was excited by …