Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:6/8
K:D
['FDD FDD FGF FED AFF', 'fdd ecc dcB'  
X:1
L:1/8
M:6/8
K:D
 A | FDD FDD | FGF FED | AFF dFF | EFE EAG | FDD FDD | FGF FED | AFF dAF | DED D2 :: a | fdd ecc | 
 dcB AFA | fda eca | dB^g a2 =g | fdd ecc | dcB AFE | DFA dAF | DED D2 :|  