Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:6/8
K:G
['GAB Bcd d2 c ABc dBG', 'A2 d c2 e', 'G/F/ E2 E GBd g3 gfe dcB']  
X:1
L:1/8
M:6/8
K:G
 D | GAB Bcd | d2 c ABc | dBG dBG | AFD DEF | GAB Bcd | d2 c ABc | dBG cAF | G2 B G2 :: B | 
 ABA A2 d | c2 e dcd | e2 c ABA | FBA GFG | A2 d c2 e | dfe dcB | BAF AGE | E3 D2 :: G/F/ | 
 E2 E GBd | g3 gfe | dcB AGF | B2 E E2 G/F/ | E2 E GBd | g3 gfe | dcB AGF | E3 D2 :|  