Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
M:4/4
K:C
['A2 DE FAcA GECD EFGE D3 E', 'Addc d3 e fded']  
X:1
L:1/8
M:4/4
K:C
 A2 DE FAcA | GECD EFGE | D3 E F3 G | (3ABc de fedc | A2 DE FAcA | GECD EFGE | D3 E FAcA | 
 GFEF D4 :| Addc d3 e | fded cAGF | ECEG c3 d | eccB cAGB | Addc d3 e | fded cAGB | AE E2 cE E2 | 
 CDEC D4 :|  