The version of Bach's Bourée on the album Stand Up by Jethro Tull has one of the greatest walking bass lines of all time, performed by Glen Cornick.
I'd always wanted to plat his bass line, but got very frustrated by the tabs available online which seemed to either have both obvious errors and even the more accurate ones used really strange fingerings that made them difficult to play. So I finally put in the effort and produced my own tab guided by what's online, my own interpretation and how I play this amazing piece of music.
Here's the original on YouTube.