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=80
M:2/2
K:A
['fedc dfed cBAG', 'caea caea']  
X:1
L:1/8
Q:1/2=80
M:2/2
K:A
 ed | cBAG Aaga | fedc dfed | cBAG ABcd | BAGF E2 ed | cBAG Aa"^NB"ga | fedc dfed | cBAG AGFE | 
 FAGB A2 :: ed | caea caea | dafa da"^NB"fa | caea caea | BAGF E2 ed | caea caea | dafa dafa | 
 edcB AGFE | FAGB"^NB" A2 :|  