Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:4/4
K:D
['A,DDE FEDC DEGA', 'cABG AGFE FDEC']  
X:1
L:1/8
M:4/4
K:D
|: DC | A,DDE FEDC | DEGA c3 d | edcB cABG | AGFE FDEC | A,DDE FEDC | DEGA cBcd | edcA GECD | 
 E2 D2 D2 :: AB | cBcB cdcA | dcde dfed | cBcd cABG | AGFE FDEC | cBcB cdcA | dcde defg | 
 afge fdec | Adce d2 de | fefg fedf | edef edcA | dfed cABG | AGFE FDEC | A,DDE FEDC | DEGA c3 d | 
 edcB cABG | AGFE FDEC | A,DDE FEDC | DEGA cBcd | edcA GECD | E2 D2 D2 :|  