‘An inner duty’: the 35-year quest to bring Bach’s lost organ works to light

Musicologist Peter Wollny chanced upon the manuscripts in 1992 and authenticating them took half of his lifetime

The best fictional detectives are famed for their intuition, an ability to spot some seemingly ineffable discrepancy. Peter Wollny, the musicologist behind last week's world sensational" revelation of two previously unknown works by Johann Sebastian Bach, had a funny feeling when he chanced upon two intriguing sheets of music in a dusty library in 1992.

His equivalent of the Columbo turn, from mere hunch to unravelling a secret, would take up half his life.