Construct a musical composition utilizing the provided motif and conforming to the specified structure.
X:1
L:1/8
M:6/8
K:C
['G2 E E2']  
X:1
L:1/8
M:6/8
K:C
 G | c2 ccBA | G2 E E2 G | c>cccBA | G2 E E2 E/G/ | G2 FDGB | ceeeag | f2 BBAB | c3- c2 |]  