Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:4/4
K:D
['A dfed', 'FAdf a3 f g3 z']  
X:1
L:1/8
M:4/4
K:D
 F3 A dfed | cAAB cde z | F3 A dfed | cAGE ED DE | F3 A d z ed | cAAB cdec | d z de fded | 
 cAGE ED D2 | f3 A dfed | cAAB cdeA | F3 A dfed | cAGE ED D z | f3 A dfed | cAAB cdec | 
 d z de fded | cAGE ED D2 |: FAdf a3 f | g3 z gfed | c A3 (3Bcdef | gfed cAGE | FAdf a3 f | 
 g3 z gfef | g2 ba gfed | cAGE ED D2 :|  