Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:2/4
K:D
["f/g/ aaa b/d'/ aaa g/e/ fffe/c/ dAA"]  
X:1
L:1/8
M:2/4
K:D
 f/g/ | aaa b/d'/ | aaa g/e/ | fffe/c/ | dAA f/g/"^F" | aaab/d'/ | aaag/e/ | f(f/d/)e(e/c/) | 
 dDD ::  