Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/4
M:3/4
K:G
['G F/A/ c']  
X:1
L:1/4
M:3/4
K:G
 G2 G | F/A/ c c | B2 D | G/B/ d d/c/ | B B G | F/A/ c e | e/d/ d d | G G2 |]  