Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:3/2
K:G
['G4 A4 B2 G2 EFGA G2 E2', 'B2 E2 EABc BGFE', 'E4 GFGA BABc dBGB cAag fedc Bc^cd', 'd2 B2']  
X:1
L:1/8
M:3/2
K:G
 G4 A4 B2 G2 | EFGA G2 E2 E2 D2 | B,DEF G2 B2 A2 FG | AB^cd e2 c2 d2 =c2 :: B2 E2 EABc BGFE | 
 A2 D2 DFGA edA^A | B2 E2 EABc BGFE | FEDC B,2 ^D2 E4 :: GFGA BABc dBGB | cAag fedc Bc^cd | 
 e=cA dBG cAF BGE | DEFG A2 B2 G4 :: g6 f2 a2 g2 | efge d2 B2 d4 | e2 c2 A2 d2 B2 G2 | 
 cBAG D2 F2 G,4 :|  