Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
Q:1/2=90
M:2/2
K:D
['c BGAG FGAc BGAF BEEc BGAG FGAg']  
X:1
L:1/8
Q:1/2=90
M:2/2
K:D
 c | BGAG FGAc | BGAF BEEc | BGAG FGAg | fdec dDD |:  