Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/8
Q:1/2=75
M:2/2
K:G
['GA B2', 'D2 Bc d2 (3(gfe) d2 AB c2']  
X:1
L:1/8
Q:1/2=75
M:2/2
K:G
 GA | B2 Bc d2 cB | A2 AB c2 BA | G2 GA B2 AG | D2 DD D2 :: Bc | d2 (3(gfe) d2 AB | 
 c2 (3(edc) B3 c | BdBG AcAF | G2 GG G2 :|  