Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:2/4
K:D
['D>F FA', 'f>f ff a>f ed'  
X:1
L:1/8
M:2/4
K:D
|: D>F FA | dA AA | BE EF | GG/G/ FE | D>F FA | d>A AA | B>A Bc | d2 d2 :: f>f ff | a>f ed | 
 ee/e/ ee | fe de | f>f ff | a>f ed | eA Bc | d2 d2 :|  