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
['d2 dd d2 A2 d2 fe d4']  
X:1
L:1/8
M:4/4
K:G
 d2 dd d2 A2 | d2 fe d4 | f2 ff f2 d2 | abag f3 g | abag fgaf | gagf efge | fgfe dbag | e3 d d4 ::  