John Oliver, who founded the Boston Symphony Orchestra’s Tanglewood Festival Chorus in 1970, and remained its sole conductor until his retirement in August 2015, has died. Oliver died on April 11, 2018 at the Fairview Hospital in Great Barrington, Massachusetts, following a long illness, at age 78. Born to Marie and Frank Oliver on June 4, 1939, in Teaneck, N.J, Oliver {…}