Elements of Art:
Line: Helps create shapes. Also known as moving point. Vary in thickness, direction, and length. One-dimensional. Abstract, descriptive, implied. 
Shape: Flat, enclosed areas (with length and height). Two-dimensional. Geometric or organic. 
Color: There are primary colors, secondary colors, etc. (different kinds of color schemes). Hue is the name of a color. Saturated/Intensity-- (ex: dull or faint. bright or strong). 
Value: lightness (adding tint) or darkness (adding shade) of a hue. In between/middle is the area of grayness. 
Form: Three-dimensional. Height, width, and depth. Can also be free flowing. 
Texture: The surface quality (of an object). There is actual texture and implied texture. 
Space: Helps give the illusion of depth. Positive and negative areas are defined. 
 
        
             
        
        
        
Answer:
melodic improvisation
Explanation:
improv is when you create something right on the spot. 
 
        
                    
             
        
        
        
If there were no copyright laws, you would not be able to protect your music after releasing it. People could take parts, or even your entire song and claim it as their own, and you would have no legal bounds or actions against the plagiarism of your work.