Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/8
Q:1/8=128
M:4/4
K:Amin
['D>D E>G']  
X:1
L:1/8
Q:1/8=128
M:4/4
K:Amin
|: A | D>D E>G A>G E<G | D>D E>G c3 e | d>B g>B A>G E<G | D>D E>G A2 AA | D>D E>G A>G E<G | 
 D>D E>G c3 e | d>B g>B A>G E<G | D>D E>G A2 AB | c>A B>G A>G E<B | c>B c>d e>f g<e | 
 d>B g>B A>G E<G | D>D E>G A2 A>B | c>d B<g A>G E<B | c>B c>d e>f g<e | d>g B<g A>G E<G | 
 D>D E>F A3 :|  