Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/8
M:2/4
K:G
['G>A Bd ed BA/B/ dc', 'gf ed ed BA/B/ dc']  
X:1
L:1/8
M:2/4
K:G
|: G>A Bd | ed BA/B/ | dc AB/d/ | ed B>d | G>A Bd | ed BA/B/ | dc A>B | AG G2 :: gf ed | ed BA/B/ | 
 dc AB/d/ | ed B>d | gf ed | ed BA/B/ | dc A>B | AG G2 :|  