Hi everyone, It took me about a week to master Bach's Prelude no. 1 BWV 846. Then I started learning the fugue. It is much more difficult. Any pointers on learning the piece? Another observation is that I've came across 2 different versions of Prelude no.1. One version plays only one note per half note with the left hand and the other version plays 2 notes per quater note in the left hand. How can this be? Still yet another observation. I notice that one version of the fugue started out with 2 treble clefs with the left hand playing the lower clef. The other version started with an elevation of the left hand on the treble leaving the bass clef with whole note rests! My teacher told me the Peterson editions are the correct ones. Explain please.