Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:6/8
K:G
['gdc BcA GBd gfg', 'B2 G DGB cee edc Bcd gdB']  
X:1
L:1/8
M:6/8
K:G
|: gdc BcA | GBd gfg | add cdd | Add agf | gdc BcA | GBd gfg | afd cAD | AGF G2 f :: B2 G DGB | 
 cee edc | Bcd gdB | Aee edc | B2 G DGB | cee edc | Bcd gdB | cAd G2 A :|  