This is a complete, unabridged republication of the standard Bach-Gesellschaft editions of the six Brandenburg Concertos and four Orchestral Suites of Johann Sebastian Bach. Among the most frequently performed and recorded works in the entire repertoire, these compositions are provided in full scores with original instrumentation in this edition. A summary in English of the German-language editors' prefaces has been newly prepared. The scores are printed in large, clear format that is convenient for performance, use, study, and reference.