Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
Q:1/4=108
M:2/4
K:Fphr
['[FD][GE][AF][BG] [AF]2 [AF]2-', '[BG][BG][cA][BG] [AF]2 [AF]2', '[GE][AF] [BG][BG][cA][BG] [AF]2 [AF]2 [BG][BG][cA][BG] [cA][BG] [AF]2', '[BG][BG][cA][BG] [AF]2 [AF]2']  
X:1
L:1/8
Q:1/4=108
M:2/4
K:Fphr
"^A" [FD][GE][AF][BG] | [AF]2 [AF]2- | [AF]2 [GE][AF] |: [BG][BG][cA][BG] | [AF]2 [AF]2 | 
 [BG][BG][cA][BG] | [AF]2 [AF]2 | [GE][GE][AF][GE] | [FD]2 [GE][AF] :| [BG][BG][cA][BG] | 
 [AF]2 [AF]2 | [BG][BG][cA][BG] | [cA][BG] [AF]2 | [GE][GE][AF][GE] | [FD]4 |"^B" FGAB | A4- | 
 A4 |: [BG][BG][cA][BG] | [AF]2 [AF]2 | [BG][BG][cA][BG] | [AF]2 [AF]2 | [GE][GE][AF][GE] |1 
 [FD]2 [GE][AF] :|  