Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/8
M:2/2
K:A
['e3 c', 'f gf']  
X:1
L:1/8
M:2/2
K:A
|: c |"E" dcBA"A" c3 A |"E" ABcd"A" e3 c |"E" dcBA"A" c3 A |"E" BABc"A" A3 :: c |"D" dcdf"A" e3 c | 
"D" dcdf"A" e3 c |"D" dcdf"A" e3 c |"E" dc B2"A" A3 ::[K:D] f |"A" gfed"D" f3 d |"A" defg"D" a3 f | 
"A" gfed"D" f3 d |"A" edef"D" d3 :: f |"G" gfgb"D" a3 f |"G" gfgb"D" a3 f |"G" gfgb"D" a3 f | 
"A" gf e2"D" d3 :|  