Correct me if I'm wrong, but I believe Robert Motherwell was influenced.
Answer:
Whether their intentions are unknown, their actions are both positive and negative, or they are their own worst enemy, a primary character can be both a protagonist and an antagonist at the same time. This can also extend to the creation of an 'anti-hero'.
Explanation:
A vertical line to left of multiple staves indicate to a musician to play music on all staves at the same time.
Which Important group of keyboard pieces did Bach write to helpincrease the skill level of his students is because of the Well-Tempered Clavier.