Patrick Williams, who was best-known for his Emmy-winning television music but who was also a renowned and Grammy-winning big-band jazz leader and arranger, died Wednesday morning of complications from cancer at St. John’s Hospital in Santa Monica, Calif. He was 79. Williams was among the most versatile composers of his generation, earning an Oscar nomination (for adapting opera in “Breaking Away,” 1979), four Emmys (for dramatic music including “Lou Grant,” 1980) and two Grammys (for arrangements including his classic jazz album “Threshold,” 1974) during more than 50 years of music-making in New York and Los Angeles. In the middle of...