tl;dr: Dolly Parton, the legendary country singer-songwriter behind hits like "Jolene" and "I Will Always Love You," has died at 80 following a brief battle with cancer. Over her career she scored 25 US country No. 1 singles, won 10 Grammys, earned an Oscar nomination for "9 to 5," and built business ventures including Dollywood. She was also a major philanthropist, distributing over 300 million children's books via her Imagination Library and funding research that contributed to Moderna's Covid-19 vaccine.