Johann Sebastian Bach's compositions, Dr. Thomas Rossin says, stemmed from his private faith — a faith evidenced by Bach's handwritten notes in his Bible. Hear about the Bible's nomadic journey and its possible influence of his "Mass in B Minor" — what the late, great scholar of creeds, Jaroslav Pelikan, holds up as an example of the "best we've ever done."

Produced by Colleen Scheck, Trent Gilliss, and Andrew Dayton