When I started playing bass circa 1982, round wound strings were the industry standard. However, in the 50,s and 60,s flats were the standard. This got me thinking "When did rounds become the main bass string?" Listening to music in the early 70,s flats were still king, but circa 1976, 1977 it was mainly rounds in the charts (JJB, Bruce Foxton etc) So when did flats get replaced? My guess in 1975. The disco era was kicking in, and those twangy octave leaps cut through the mix better. Only a guess though. Any thoughts?