Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
Q:1/8=304
M:2/2
K:A
['AB c2 BA e2 fg a2 gf', 'e2 a2']  
X:1
L:1/8
Q:1/8=304
M:2/2
K:A
 AB | c2 BA e2 fg | a2 gf e2 a2 | fg ef de cd | BAGF E2 B2 | cdef B3 A | A4 z2 :: e2 | 
 a2 a2 a2 bc' | f2 f2 f2 f2 | b2 b2 b2 c'd' | g2 fg e2 a2 | f2 e2 e2 a2 | f2 e2 e2 dc | 
 f2 e2 dcBA | G2 FG E2 AB | c2 BA e2 fg | a2 gf e2 a2 | fg ef de cd | BAGF E2 B2 | cdef B3 A | 
 A4 z2 :|  