Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/4
Q:1/4=120
M:2/2
K:C
['G c']  
X:1
L:1/4
Q:1/4=120
M:2/2
K:C
 G | G3/2 G/ G ^F/E/ | G2 z G | G G c c | B2 z G | c B A (G | G) D E (F/G/ | A G2 F) | G3 (G/A/ | 
 B c) d G | c c B e | d c c B | .c3 |]  