Long traded and coveted, discussed and debated, Propeller Product’s 1981 cassette compilation finally receives a physical release reflecting its original intention and aim. And this is its Boston origin story: a small collective with a DIY artistic bent, Propeller launched in 1981. Founded as a collaborative taking inspiration from Factory Records and the “pay no more” ethos of DischordRecords and CRASS, Propeller offers an unique window into Boston and the American post-punk underground. Led by…