(Reuters) – Country musician Jack Greene, a veteran star of the Grand Ole Opry, died of complications from Alzheimer’s disease at the age of 83, the Nashville, Tennessee, music hall said on Friday. Greene, who was best known for his smooth voice and 1966 song “There Goes My Everything,” died in his sleep at his home in the capital of country music, the Grand Ole Opry said in a statement. Known as the “Jolly Green Giant,” Greene became a member of the Grand Ole Opry in 1967, a sign of elite status in the industry, regularly performing at the stage’s weekly country music performances. …