Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/16
Q:3/8=50
M:3/8
K:D
['A2fed2 A2fed2 a2edce d2f2a2 A2fed2 A2gfe2', 'd6 faagf2 gbbagf eggfe2 faagf2 A2fed2 A2gfe2', 'd6 a2afgb a2>f2df a2>g2ec dcdefg a2>f2gb a2>f2df', 'd6 ceagec dfbafd ceagec defdAd ceagec dfagfd']  
X:1
L:1/16
Q:3/8=50
M:3/8
K:D
 A2fed2 | A2fed2 | a2edce | d2f2a2 | A2fed2 | A2gfe2 | A2edce | d6 :: faagf2 | gbbagf | eggfe2 | 
 faagf2 | A2fed2 | A2gfe2 | A2edce | d6 :: a2afgb | a2>f2df | a2>g2ec | dcdefg | a2>f2gb | 
 a2>f2df | a2>g2ec | d6 :: ceagec | dfbafd | ceagec | defdAd | ceagec | dfagfd | ceagec | d6 :|  