Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:6/8
K:G
['d2 G', 'ABc d2']  
X:1
L:1/8
M:6/8
K:G
 d2 G dcB | cBc ABc | d2 G d2 c | BcA G3 :| cBc cBc | ABc def | gfg eag | gfe def | g2 g gfe | 
 dec ABc | d2 G d2 c | BcA G3 | cBc cBc | ABc d2 e |[M:3/28] f3 |[M:6/8] g2 f g3 | (2:3:2ea g3 | 
 g2 f e3 |[M:3/28] def |[M:6/8] g2 g gfe | dec ABc | d2 G d2 c | BcA G3 ||  