Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:4/4
K:Dmix
['EFGE AF (3GFE']  
X:1
L:1/8
M:4/4
K:Dmix
"D" d3 B ABAG |"C" EFGE AF (3GFE |"D" D2 DE FEFG |"Am" A2 cB AGFG |"D" AddB A2 AG | 
"C" EFGE AF (3GFE |"D" DEFG A2 dB |1"Am" (3ABA GE"D" F2 D2 :|2"Am" (3ABA GE"D" FDDD || 
"D" Ad (3ddd"Am" AGFG |"D" AddB"C" A2 AG |"D" Ad (3ddd"Am" AG (3EFG |"C" ABcA (3GAG FG | 
"D" Ad (3ddd"Am" AGFG |"D" AddB"C" A2 AB |"D" c2 AB cBAG |1 FGAB"Am" cBAG :|2 FGAB"Am" cA(3AAA ||  