Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/8
M:4/4
K:D
['', 'dcBc A2', 'dcBc A2']  
X:1
L:1/8
M:4/4
K:D
 FE |: D2 FA d2- dd- | dcBc A2 GF | G2 GF GABc | dcBc A2 FE | D2 FA d2- dd- | dcBc A2 GF | 
 GABG ABce |1 d4- d2 FE :|2 d4- dcde |: f2- f e- e2 d2- | dcBc A2 GF | G2 GF GABc | dcBc A2 de | 
 f2- f e- e2 d2- | dcBc A2 GF | GABG ABce |1 d4- dcde :|2 d4- d2 ||  