Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/8
M:3/8
K:G
['A>_BA G>FG D2 D G>A_B']  
X:1
L:1/8
M:3/8
K:G
 D | G3/2A_B/ | A>_BA | G>FG | D2 D | G>A_B | d2 A | c_BA/A/ | G2 z | G>A_B | A>_BA | G>FG | D2 D | 
 G>A_B | d>cA | c_BA | G2 |]  