The prelude from suite BWV 1006 is without a doubt the bridge to a perfect world where everything works perfectly and everything is in the right place. It shows clearly how well  wired the brain of the German master was. The more I listen to the piece the more stunned I am and it is simply inconceivable to think that it could have been written any better. Any other Baroque prelude this long by any other composer would make us bored to death. Only Bach could improve on Bach and Prelude 1006 is the pinnacle of his chamber writing. Grandiose, magnificent, spectacular, are the adjectives that come to mind when I hear the work. The opening statement that seems to announce light joy changes to a  more solemn character only a few staffs into the work. The work reaches amazing peaks that send shivers through the soul and the only thing you want to do is play it or hear it again.
Narciso Yepes and John Williams are the best Bach guitar interpreter because of their absolute clarity of ideas when it comes to musical phrasing. Yepes did not record this work unfortunately (or at least I am not aware that he has). Williams' recordings of the piece and his interpretation are an excellent guide and so is the recording in Seville available on video (The Seville concert). 

Williams fingering, although very intelligent, is tailored for his technique which I recommend you stay away from because although it works very well for Williams, it has been the doom for many players.  The piece must be studied with a commitment in mind. It cannot by any means be approached lightly. It requires the very best of the performer. You will have to make your own exercises to overcome certain passages and must leave NOTHING to chance.

Bach depicted on the German 50 Euros bill
 

Recommended performance: .mp3 Members only

Australian master John Williams needs no presentation. His interpretation of 1006 is simply PERFECT.  The phrasing is clearer than human speech. This is from his video "The Seville concert". I recommend you buy this video. There is not an inch of the tape that is discardable... I put it on when I need a guitar boost to keep working  ...