Construct a musical piece that follows the designated lettered structure and integrates the provided motif throughout.
X:1
L:1/8
Q:3/4=70
M:3/4
K:C
['e4 d2 c2 G2 c2', 'e4 d2 c2 G2 c2']  
X:1
L:1/8
Q:3/4=70
M:3/4
K:C
 e4 d2 | c2 G2 c2 | c2 cdec | d2 defd | e4 d2 | c2 G2 c2 | d2 d4 | c6 :: e4 f2 | g2 c2 d2 | e4 f2 | 
 g6 | edcdef | edcdef | edcdef | g2 ag f2 | e4 d2 | c2 G2 c2 | cBcdec | d2 defd | e4 d2 | 
 c2 G2 c2 | d2 d4 | c6 :|  