Design a musical work that abides by the outlined structure and integrates the assigned theme.
X:1
L:1/8
M:2/2
K:A
['efec efec'  
X:1
L:1/8
M:2/2
K:A
 E2 |"A" ABcd efec | efec efec |"D" dfdB"A" cAcA |"E" BAGF EFGB |"A" ABcd efec | efec eaec | 
"D" dfdB"A" cAcA |"E" BAGB"A" A2 :: (3(efg) |"A" a2{b} ag aece | aA gA fA eA |"D" dfdB"A" cAcA | 
"E" BAGF EFGB |"A" A a2 g aece | aA gA fA eA |"D" dfdB"A" cAcA |"E" BAGB"A" A2 :|  