Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
Q:1/2=90
M:4/4
K:none
['cecB AGFE Bcee gBAB gBgB aBAB GBFB', 'c4 gBAB gBAB gaba gfed edcB cBed']  
X:1
L:1/8
Q:1/2=90
M:4/4
K:none
 cecB AGFE | Bcee gBAB | gBgB aBAB | GBFB DBDB | cecA c4 || gBAB gBAB | gaba gfed | edcB cBed | 
 edcB BAGF | Bede fBAB | gBaB bBAB | GBFB EBDB | cecB B2 A2 |]  