Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/8
M:12/8
K:D
['A2 D FED F2 A A2 f', 'f3 gfe']  
X:1
L:1/8
M:12/8
K:D
|: B | A2 D FED F2 A A2 f | gfe fed e2 d Bcd | A2 D FED F2 A A2 f | a2 f efe d3 d2 :: A | 
 d2 e f3 gfe f3 | gfe fed e2 d B2 c | d2 e f3 gfe f2 f | a2 f efe d3 d2 :|  