Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:2/2
K:D
['FAAF GFED FAAc', 'fddf geeg']  
X:1
L:1/8
M:2/2
K:D
 FAAF GFED | FAAc dABG | FAAF GFGB | AFdF E2 D2 | FAAF GFED | FAAc dBAG | FAAF GFGB | AFdF E2 D2 :: 
 fddf geeg | fded (cA) A2 | fddf geeg | fdec d2 d2 | fddf geeg | fded (cA) A2 | FAAF GFGB | 
 AFdF E2 D2 :|  