How many pickup notes are in the musical excerpt?

one
three
two
none

Start with a good stem and on the top put a kinda wiggly line into a circle connecting to the stem then draw some squiggly lines in the circle that should be about 3-2 inches long

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The gregorian chant was a major cultural milestone in the middle ages. it was one of the first codified forms of music meant to be played as written, where previously it was difficult to mass-produce and disseminate any music. what's more, these chants were also some of the first examples of musical notation: the notes and bars of today's music sheets are a reflection of centuries of evolution beginning with these chants. it became official throughout the entirety of the catholic church, meaning that nearly all of europe followed this musical notation and styling.