Terry Riley gave the world minimalist music. At 90, he’s still performing

American composer Terry Riley’s name isn’t well known, but he’s among the most influential composers of the 20th century. With the song “In C,” which The Library of Congress deemed a “stealth masterpiece,” Riley launched a new music movement called minimalism, which other composers like Phillip Glass and Steve Reich embraced. It also influenced artists across genres, including ambient, electronic, pop, and rock. Riley turned 90 years old in June. The Ford amphitheater will celebrate his birthday and music on Sunday, September 7 . Terry Riley’s son, Gyan Riley, will join The Bang on a Can All-Stars and other special guests to play “In C” and other songs. The Ford will host a concert on September 7 to celebrate Terry Riley. Courtesy of LA Phil. Gyan Riley tells KCRW that he heard “In C