Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:3/8
K:D
['D E2 F']  
X:1
L:1/8
M:3/8
K:D
 A, | DFA | A2 A | BA^G | A3 | AFG | AFA | BA^G | A2 D | E2 F | GEE | F2 A | ABA | AGF | F3 | 
 E2 D | E2 F | GEG | FAF | DEF | GEC | D2 |]  