Explanation:
Line is a mark with greater length than width. Lines can be horizontal, vertical, or diagonal; straight or curved; thick or thin. Shape is a closed line. Shapes can be geometric, like squares and circles; or organic, like free-form or natural shapes. Shapes are flat and can express length and width.
When jazz education started not many people were into jazz so it made a lot more people enjoy it and want to learn it. Positive changes were that more people played. Negatives were that people were against it.
