Life Jim Pike, co-founder of 1960s vocal group The Lettermen, dies at 82 June 19, 2019 John Rogers, The Associated Press Comments Off on Jim Pike, co-founder of 1960s vocal group The Lettermen, dies at 82 Jim Pike, co-founder and lead singer of the Grammy-nominated trio The Lettermen, one of the most popular vocal groups of the '60s, has died at age 82.