Disclaimer: I have absolutely no experience with gut strings whatsoever. I'm a classical player and all I've ever used, seen, felt, touched, smelled, or heard are steel strings. Some questions/thoughts/experiences pertaining to guts: I recently tuned my bass to A=415 as an experiment; and I found that the bass resonated differently, though not necessarily better per se. I don't explicitly remember having to greatly alter my bow technique to compensate for the lower tension, but I do remember having to be cleaner, more careful, and generally more deliberate with all of my bow strokes, bow changes, etc. because the string responded a lot slower. I saw a video a while ago of Rinat Ibragimov talking about gut strings and I remember a shot of what I was the LSO bass section putting on guts in before rehearsal. This brings up the question: Currently does anyone ever use guts (wound or unwound) for orchestra work? Can gut strings even be tuned to A440 without breaking or suffering major tonal alterations? Anyway...overall, what is playing on gut strings like? I'm talking tone-wise, tension-wise, gauge-wise, response-time-wise. I know it's different for every bass and everything like that but I'm trying to avoid buying a new set of $300 guts for a few days of experimentation. Thanks!