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
['g dcB cBA G2 G G2', 'd A2 A ABc B2 B']  
X:1
L:1/8
M:6/8
K:G
 g | dcB cBA | G2 G G2 D | GFG ABc | TB2 A G2 g | dcB cBA | G2 G G2 g | fed ed^c | d2 d d2 :: d | 
 A2 A ABc | B2 B B2 d | edc BAG | FGA D2 d | A2 A ABc | B2 B Bgf | edc BcA | G2 G G2 :|  