Thanks for all this input guys, May i just recap 😊 - the reason i have difficulty playing my Mel Bay - Bach for Bass by Josquin des Pres, is that i am still in 4th's tuning, this is a discussion i have had with others many times, but couldn't figure if it would be any easier but never tried re tuning and from all your comments i would have struggled to do so, with existing strings etc. fascinating thread cheers guys