Question: Where was the musician from, who released a single  1971 under the name C. Company about a former United States Army officer convicted by court-martial of murdering 22 unarmed South Vietnamese? 
Sentence (from "William Calley"): William Laws Calley Jr. (born June 8, 1943) is a former United States Army officer convicted by court-martial of murdering 22 unarmed South Vietnamese civilians in the My Lai Massacre on March 16, 1968, during the Vietnam War.
Relevant evidence: Yes