Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:2/4
K:G
['GG/A/ BB/c/ de d>c BG', 'c2 BG']  
X:1
L:1/8
M:2/4
K:G
 GG/A/ BB/c/ | de d>c | BG AF | G/A/B A2 | GG/A/ BB/c/ | de d>c | BG DF | G2 G2 :: c2 BG | 
 A2 GA/B/ | c2 BG | AF G2 | cc BG | AA GA/B/ | cc BG |1 DF G2 :|2 EF G2 ||  