Please answer all questions

1.			Retaining some features of a musical idea while changing others is called
			A)	form
			B)	contrast
			C)	repetition
			D)	variation
2.			Three-part form can be represented as
			A)	A B A
			B)	A B A'
			C)	statement, contrast, return
			D)	all of the above
3.			The organization of musical ideas in time is called
			A)	form
			B)	repetition
			C)	ternary
			D)	variation
4.			Repetition is a technique widely used in music because it
			A)	creates a sense of unity
			B)	helps engrave a melody in the memory
			C)	provides a feeling of balance and symmetry
			D)	any of the above
5.			The form consisting of a musical statement followed by a counterstatement would be called
			A)	ternary
			B)	binary
			C)	free
			D)	any of the above