So I learned "What's Goin On" by ear from the original isolated track by James Jamerson. I have Standing in the Shadows of Motown but I kind of use it in reverse. I prefer to learn the bassline by ear then check my transcription againt the book. (Wonderful exercise by the way if you have never tried it. Great way to check your ear....also there are mistakes in the book and mistakes that some of the artists play). Anyway, for those of you that have played the original basslines you know that Jamerson rarely if ever plays 2 bars the same....it is pure feel and improvisation...and this goes on for 3 - 4 minutes. They are mini masterpieces. I am having a really hard time remembering the entire lines. I am strict when it comes to this, I want to play every dead note and rhythm perfectly for the whole 3 + minutes. I could easily read all the lines but I want to play it in one take with no mistakes without looking at the written page. I spent all this time working it out but it is bloody hard to remember every nuance. If you focus on one section it is near impossible to remember the previous one. Grrrrr! Any tips how to memorize this thing or Jamerson in general???