Les Emmerson, frontman of the Canadian rock group Five Man Electrical Band and writer of the hippie-era anthem “Signs,” died last Friday, Dec. 10, CTV News reports. He was 77. Emmerson’s wife, Monik Emmerson, confirmed his death, saying, “He had underlying health conditions that made him additionally vulnerable to Covid.” She added that Emmerson had been in-and-out of the hospital for other reasons over the past year. While he was vaccinated against Covid, Emmerson contracted the virus in November and died in the ICU at an Ottawa hospital.