Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:3/4
K:Emin
['def g2 ga ba g2 fg af']  
X:1
L:1/8
M:3/4
K:Emin
|: def | g2 ga ba | g2 fg af | e2 B2 de | d4 gf | ed cB AG | G4 BA | B5G | F2 E4 :|  