Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
['dBd dBd', 'gbg dBd']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
 GBd dBd | dBd dBd | efg dcB | ecA A3 | GBd dBd | dBd dBd | gab dgd | BGG G3 :: gbg dBd | gbg dBd | 
 gab dcB | ecA A3 | gbg dBd | gbg dBd | gfe dBg | dBG G3 :|  