These four CDs contain the entire Bach Edition, all 46 volumes, first published in 1851-1900 by the Bach Gesellschaft. Four custom-designed documents make navigation and printing of the collection remarkably quick and easy: · Completely interactive table of contents · Index of volumes in German and English · Index of BWV numbers · Complete index of titles (including movement titles and every aria from every cantata indexed!) Over 18,000 pages of music! Works on PC or Mac computers. Uses Acrobat Reader® (available for free). No special software or skill required.