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  The ancestors of modern symbolic musical notation originated in the Roman Catholic Church, as monks developed methods to put plainchant (sacred songs) to parchment.
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  The music of the troubadour and trouvère, a vernacular tradition of monophonic secular song possibly accompanied by instruments and singers. Guillaume d'Aquitaine was one of the well known troubadours. Themes were mostly of chivalry and courtly love.
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  The harp was first used in europe in 1050.
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  In 1066, William the Conqueror, Duke of Normandy, invades England and becomes King after the Battle of Hastings.
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  The construction of the Tower of London in London, England begins.
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  First Crusade preached by Pope Urban II in 1095, in response to a request by the Byzantine empire
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  She was an early female composer from Germany. Most of her composing is written in plainsong. She was also a nun, and a writer.
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  The Notre Dame school of polyphony was the center of activity. Rhythmic notation first appeared in this period. This is also when the motet was initially developed.
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  The lyre is first used in northern and central europe. It was adapted from Greece.
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  It is a form of monophonic liturigical music. It is named after Pope Gregory I, who was Bishop of Rome during this time.
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  The organum is developed in 695. It is an early form of counterpoint.
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  The Church Mode, also known as the Gregorian Mode, is a pitch mode for the Gregorian chant. It is one of eight. Two characteristic pitches are final and cofina;.