Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:2/4
K:D
['dcBA FA B2', 'FFED FA B2'  
X:1
L:1/8
M:2/4
K:D
 dcBA | FA B2 | AFDE | FE E2 | dcBA | FA B2 | AFEF | D2 D2 :: FFED | FA B2 | AFDE | FE E2 | FFED | 
 FA B2 | AFEF | D2 D2 :|  