The 12-inch single gramophone record came into existence with the advent of disco music in the 1970s. The first 12″ (30 cm) single was actually a 10″ (25 cm) acetate used by a mix engineer (Jose Rodriquez) in need of a Friday night test copy for famed disco mixer Tom Moulton. As no 7″ (18 cm) acetates could be found,… Read more →