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
['B,G,B,C DE=FD', 'e^def gBBA (3Bcd BA GBdB A2 Bd', 'FDCF DEFD GFDC B,G,B,C DEFD G3 B', 'egfa gd d2 ^cdBG |1 FGAF GABd']  
X:1
L:1/8
M:4/4
K:G
 DEFD GFDC | B,G,B,C DE=FD | G3 B dBcA | GFDE =FDCF | DE=FD G^FDC | B,G,B,C DE=FD | GFGB AGFA |1 
 DGGF G3 F :|2 DGGF G2 Bd |: gBdg GBdg | bgag e^def | gBBA (3Bcd BA | GBdB A2 Bd | gBdg GBdg | 
 bgag e^def | gd d2 ^cdBG |1 FGAF G2 Bd :|2 FGAF G3 F || DEFD GFDC | B,G,B,C DEFD | G3 B dBGB | 
 A=FDE FDCF | DEFD GFDC | B,G,B,C DEFD | G3 B AGFA |1 DGGF G3 F :|2 DGGF G2 Bd |: gBdB GBdg | 
 bgag egfa | gBBA (3BcB AB | GBdB ABcd | gB B2 GBdg | bgag egfa | gd d2 ^cdBG |1 FGAF GABd :|2 
 FGAF G3 F ||  