Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:4/4
K:D
['', '(3FED FA', 'g2 fg abaf']  
X:1
L:1/8
M:4/4
K:D
 AG |: (3FED FA d2 fd | d2 fd ecAG | (3FED FA deff |1 ecAF G2 AG :|2 ecAF G4 |: f3 f g2 fg | 
 abaf gfed | [fd]3 f g2 fg | abaf g2 fg | abaf gfee | fe d2 ecAG | (3FED FA deff |1 ecAF G4 :|2 
 ecAF G2 AG ||  