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:G
['Bd d2 edBd eg g2 a2 ba', 'Bd gdgb']  
X:1
L:1/8
M:4/4
K:G
 Bd d2 edBd | eg g2 a2 ba | gedB eBdB | A2 GA BGEG | Bd d2 edBd | eg g2 a2 ba | gedB cAFA |1 
 (3G/A/G/F GA BGEG :|2 G2 Bd gdgb |: a2 ga bgaf | gfed BGEF | GBdB eBdB |{G} A2 Bd gdgb | 
 a2 ga bgaf | gfed Bdef | gdBd cAFA | G2 Bd gdgb :|2 (3G/A/G/F GA BGEG ||  