Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
Q:1/8=232
M:4/4
K:G
['FG AF GB', 'G2 Bd gf ef gd Bd (3(efe)', 'G2 Bc dB GB AF EC B,C', 'G2 Bd (3(gfg) dg (3(efe) ce de']  
X:1
L:1/8
Q:1/8=232
M:4/4
K:G
|: Bc | (3(dcd) gd BG AB | (3(cBc) ec AG FA | DG BG FG AF | GB (3(def) gd Bc | 
 de (3(dcd) (3(BAG) AB | cB AG FG AF | GB dg fd cA | BG GF G2 :: Bd | gf ef gd Bd | 
 (3(efe) ce dB Gc | ed ce dc Bd | (3(gba) (3(gfe) d2 ef | gf ed cB AG | FG AB cd ef | gb ge dc BA | 
 BG GF G2 :: Bc | dB GB AF EC | B,C DE FG AB | cB dB cB AG | (3(FEF) AB ce dc | BG AF GD EC | 
 B,D EF GA Bc | df eg fd cA | BG GF G2 :: Bd | (3(gfg) dg (3(efe) ce | de dc BG AB | cB cA dc Bd | 
 (3(gba) (3(gfe) d2 ef | (3(gab) af ge dB | (3(cde) dB cB AB | df eg fd cA | BG GF G2 :|  