Eric Weissberg, a gifted multi-instrumentalist whose melodic banjo work on the 1973 hit single “Dueling Banjos” helped bring bluegrass music into the cultural mainstream, died on Sunday, March 22, 2020 at the Sandyside Assisted Living in White Lake. He was 80. Juliet Weissberg, his wife of 34 years, said the cause was complications of Alzheimer’s disease.