On this day in 1882 Robert Koch discovered Mycobacterium tuberculosis, the bacterium that causes tuberculosis. 

Born on this day in 1864 composer Franco Leoni

Born on this day in 1882 composer Emmerich Kálmán

Born on this day in 1913 baritone Tito Gobbi

Born on this day in 1921 soprano Sena Jurinac

Born on this day in 1925 composer Luciano Berio

Happy 60th birthday soprano Cheryl Studer

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