Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:2/4
K:Gdor
['G2 Ac']  
X:1
L:1/8
M:2/4
K:Gdor
 G2 Ac | (3BAG AF | G2 Ac | (3BAG AF | G2 Ac | C>D F<G | c>c B<G | A>G FD | C2 DF | A>G F<D | 
 C2 F2 | G2 G2 |]  