Answer:
On one side stood the Poussinists (Fr. Poussinistes) who were a group of French artists, named after the painter Nicolas Poussin, who believed that drawing was the most important thing. On the other side were the Rubenists (Fr. Rubénistes), named after Peter Paul Rubens, who prioritized color.
There are five lines on a single staff.
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False; the beatles started it in the 60's