Well - Herbie Flowers has made his name on being the bass player on Walk on the Wild Side - he played two bass lines - one on BG and one on Double Bass.
He lives in Brighton, my home town and plays around here regularly - mostly only on DB nowadays!
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“Making the simple complicated is commonplace; making the complicated simple, awesomely simple, that's creativity.” Charles Mingus
if you have seen the classic albums vid. Flowers outlines how he overdubs the 10ths so it sounds like a double stop line.
So to do it in reality take a little bit of manipulation.
Fernando Saunders was the main electric man on later albums.
Great player.