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
['G2 G2']  
X:1
L:1/8
M:4/4
K:G
"G" G,B,DG B2 cB |"Am" BAAG A2 B2 |"D7" BAAG AcBA |"G" GFGA G2 G,2 |"G" G,B,DG B2 cB | 
"Am" BAAG A2 B2 |"D7" BAAG ADBA |"G" G2 G2 G2 Bc |"G" dB d2 b2 a2 | g2 B2 d4 |"D7" (3ded cA DF A2 | 
 cAFA"G" G2 Bc |"G" dB d2 b2 a2 | g2 Be d4 |"D7" d<e c2 DFAc |"G" B2 G2 G2 z2 |]  