Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:4/4
K:Gmin
['GA B2 AB G2 dc BcAB G3', '[B,G]2 d2 g^fga gfga b2 B2 B2']  
X:1
L:1/8
M:4/4
K:Gmin
 GA | B2 AB G2 dc | BcAB G3 d | e2 ed c2 fe | DEFD b4 | B2 gB A2 fA | GBAF D2 dc | BABG DG^FA | 
 G2 [B,G]2 [B,G]2 :: d2 | g^fga gfga | b2 B2 B2 ga | bagf edcB | ABcA F4 | B2 AB c2 Bc | 
 d2 d2 gabg | fB efge | d2 G2 cdec | BcdB ABcA | GBA^F Dedc | BABG DG^FA | G2 [B,G]2 [B,G]2 :|  