"Sam Stone" by John Prine.
OK, boys and girls, back to the 70s: This Maywood, IL-born singer/songwriter/guitarist worked as a postman for 5 years before joining the Army. He was "discovered" by Roger Ebert and Kris Kristofferson while playing folk clubs in Chicago. A 1971 song about a drug-addicted Vietnam Vet with a Purple Heart succumbing to an overdose was a biting reminder of the heroin addiction problem among Vietnam Vets. Artist? Song? Answer: "Sam Stone" by John Prine. "There's a hole in daddy's arm where all the money goes...". Sad but masterful song. We had the privilege of seeing him twice on stage - two of the best concerts ever. His appearances on "Austin City Limits" are legendary. Very dexterous fingerstyle picker! He survived two cancers only to die from COVID-19 in 2020. https://www.youtube.com/watch?v=OLVWEYUqGew&list=RDOLVWEYUqGew&start_radio=1