Berno was the Abbot of Reichenau from his appointment by Henry II, Holy Roman Emperor, in 1008. He reformed the Gregorian chant. He compiled a tonarius, dealing with the organisation of the church chants into ‘tones’ – eight modes of the Gregorian... Wikipedia
Born: 978 AD
Died: June 7, 1048 (age 70 years), Reichenau Island, Reichenau, Germany