Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:2/4
K:Eb
['G2 FF']  
X:1
L:1/8
M:2/4
K:Eb
 B | c2 Bc | BAGA | GFEG | G2 FF | G2 =A2 | B2 ce | d2 c2 | B2 z B | B2 GE | e2 cA | cBAG | G2 FF | 
 F2 GA | Bcde | E2 F2 | A G2 B | B2 GE | e2 cA | cBAG | G2 FF | F2 GA | Bcde | E2 GF | E2 z |]  