Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:6/8
K:D
['A3 AGE', 'ABc d2']  
X:1
L:1/8
M:6/8
K:D
|: Adc"^~~" A3 | AGE G3 | Adc ABA | GEA GED | Adc"^~~" A3 | AGE G2 B | AGE cde | dcA G3 :: 
 ABc d2 e | fed edc | ABc d2 d | eag edc | ABc d2 e | fed efg | age cde | dcA G3 :|  