Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:4/4
K:G
['A2 G2']  
X:1
L:1/8
M:4/4
K:G
 D>D | B3 AcBAG | A3 G F2 D>F | A2 AD c2 B>A | A2 G2 z2 GF | E2 E2 G2 FE | D>FF>A d2 cA | 
 G3 B d2 cA | A2 G2 z2 |]  