Assemble a musical composition that combines the featured motif and conforms to the defined alphabetical form.
X:1
L:1/8
M:2/4
K:D
['A fedc', 'f edcB', 'd3 B g3 B d^c =c2- cccc']  
X:1
L:1/8
M:2/4
K:D
 A | fedc | BdAF | Adcd | e3 A | fedc | BdAd | fedc d3 :: f | edcB | cdec | Bfed | c3 f | edcB | 
 ceaf | edcB | A z"_D.C." [ac] ::[K:G] d | d3 B | g3 B | d^c =c2- | cccc | f3 e | d3 c | Be d2- | 
 dddd | d3 B | g3 B | d^c =c2- | cccc | f3 e | e^c=cA |1 G4- | Gdd :|1 G4- | G2 z |]  