Some composers picture colors or abstract shapes when they’re working on a new piece. Derrick Skye thinks about space. His fascination with the cosmos is threaded throughout his compositions, including the latest in his series "Prisms, Cycles, Leaps." For our series on California composers. reporter Clare Wiley sat down with the Los Angeles-based Skye to hear how he brings his otherworldly ideas to life and how living in multicultural LA has influenced him.   Plus, we go to the oldest 100-mile ultramarathon in the world: The Western States Endurance Run. This grueling race starts near Lake Tahoe and winds along old mining trails in the Sierra, drops into the canyons of the American River, and finishes outside Sacramento. Thousands of people are on the waitlist to attempt it, but just a fraction make it to the starting line. The runners who do compete are overwhelmingly white, even though the race is trying to include more BIPOC athletes. KQED’s Mark Nieto got to watch this year’s race at the end of June and he followed one competitor who’s inspiring other runners of color.  Learn more about your ad choices. Visit megaphone.fm/adchoices