“A study by an academic who has spent more than 30 years looking at Bach’s work claims that Anna Magdalena Bach, traditionally believed to be Bach’s musical copyist, actually wrote some of his best-loved works, including his Six Cello Suites… He points to what he regards as the uniquely symmetrical nature of the work, and to the fact that the manuscripts included many corrections and adjustments, suggesting that they were original composing scores.” Scholars are intrigued, but several prominent performers are skeptical.