Most people think that the late, great Duck Dunn played the bass line to Green Onions by Booker T And The MGs, but in fact it was Lewis Steinberg.
When I came to prepare the lesson I isolated the bass line in Anytune software and was surprised to find that it’s just a quarter note based line. As well as playing it this way in the first video below I’ll also play it how it’s commonly played by cover bands (and how I played it for years). Once you get beyond the intro (and be careful, on different versions of the song this intro can be 4 bars long!) the bass line is just a simple 12 bar line that’s repeated over and over without variation for the duration of the song.
I class this as a Level 3 bass line. (The scale I use is 1 to 10 – a Level 1 bass line might be a predominantly half note ballad kind of line like Imagine and a Level 10 line would be an uptempo 8th note based line like I Saw Her Standing There or Shake A Tailfeather).
Here’s how it was originally played – there’s notation and tab in the video: