The National Philharmonic, together with guest soloists and the National Philharmonic Chorale, present an all-Bach evening showcasing a selection of the composer’s greatest and most universally beloved works. Saturday’s highly anticipated concert features the Brandenburg Concertos, Nos. 2, 3 and 4 and the glorious “Magnificat in D Major.” All of the works chosen reveal a lighter, more joyful side of Bach’s sublime genius.