Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:6/8
K:Dmin
['', 'A2 A', '=B c=Bc GED CEG BAG FEF GFG']  
X:1
L:1/8
M:6/8
K:Dmin
 D2 E |: FED A2 A | ABA AGF | EDC G2 G | GAG GFE | FED A2 A | ABA AGF | EFG GFE |1 FGE D2 E :|2 
 FGE D2 A || d^cd A2 A | d^cd A2 =B | c=Bc GED | CEG BAG | FEF GFG | A^GA BAG | AGF EAG |1 
 FDD D2 ^c :|2 FDD D2 ||  