Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/16
M:2/4
K:G
['DE D2(Bc) B2(Bc) BAGB A2(DE) D2(AB) A2(AB)', 'e4 cBAc BAGB']  
X:1
L:1/16
M:2/4
K:G
 DE | D2(Bc) B2(Bc) | BAGB A2(DE) | D2(AB) A2(AB) | AGFA G2DE | D2(Bc) B2(de) | dcBd c2e2 | 
 edcB dcBA |1 G2B2G2 :|2 G2B2G2 z2 |: (E^D).E2 (GF).G2 | (B^A).B2 e4 | cBAc BAGB | AGFA G2B,2 | 
 (E^D).E2 (GF).G2 | (B^A).B2 e4 | cBAc BAGB |1 AGFG E2 z2 :|2 AGFG E2 ||  