Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:2/4
K:D
['', 'FA DA/G/ FA Dd cd ec', 'ef/g/ fd df e/d/c/B/ A d/e/ fd']  
X:1
L:1/8
M:2/4
K:D
 A/G/ |: FA DA/G/ | FA Dd | cd ec | d/c/d/e/ fA/G/ | FA DA/G/ | FA Dd | cd ec |1 d2 dA/G/ :|2 
 d2 d>e |: fd d/e/f | ge ef/g/ | fd df | e/d/c/B/ A d/e/ | fd d/e/f | ge e/f/g | 
 f/e/d/f/ e/d/c/e/ |1 d2 d>e :|2 d2 d2 |]  