Craft a musical work based on the specified structure and given theme.
X:1
L:1/8
M:6/8
K:D
['D2 F F2 A dfe', 'A2 c c2 e', 'D2 F F2 A dfe', 'A2 c c2 e'  
X:1
L:1/8
M:6/8
K:D
 D | D2 F F2 A | dfe d2 B | Add Gdd | FdF EDC | D2 F F2 A | dfe | e2 d | cBA EF^G | AEC A,2 :: A | 
 A2 c c2 e | afg afg | A2 c c2 e | gef g2 f | fed cBA | BAG FED | CDE A,B,C | D2 D D2 :| 
"^variation" D | D2 F F2 A | dfe d2 B | Add Gdd | Fdf edc | D2 F F2 A | dfe | e2 d | cBA EF^G | 
 Aec A2 :: A | A2 c c2 e | afg afg | A2 c c2 e | gef g2 f | fed cBA | BAG FED | cde ABc | 
 d2 d d2 :|  