Just that, when did you first hear of and start using round wound strings, do you still use them, how did you become aware of them? For younger players this probably sounds a little odd but all bass strings as far as I am aware of were flatwounds until at least the mid to late 60's. I started playing bass somewhere around 1967-68 and used flatwounds until around 1972 which is when I first heard of them. The first album I ever had on which I became aware of a bright bass sound was on a James Taylor album believe it or not called One Man Dog which came out in 1972. Also Roundabout by Yes came out in 1972 and was a big hit on AM radio. Back then the only brand I was aware of were Rotosounds, in fact everyone called round wounds Rotosounds kind of like everyone used to call refrigerators Fridgaires. I have come full circle now and use flatwounds again on some of my basses. I was young so probably wasn't aware of all that was going on in the bass world and my perception was that they were not well known until the early 70's, anyone well aware of them during the late 60's? Supposedly Rotosound began making them somewhere around 1966 because of Entwistle. I've been curious about this for a long time now.