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:Bmin
['fgfe dBAB GBdB']  
X:1
L:1/8
M:4/4
K:Bmin
|:"Bm" fBBB fgfe |"G" dBAB GBdB |"A" cAAd AAec |"Em" afdB"A" ecAc |"Bm" dBBB fgfe |"G" dBAB GBdB | 
"A" cAdB ecAA | afec"Bm" B4 ::"Bm" ffdB"G" GBdB |"A" caec"Bm" dBBB |"Bm" ffdB"G" GBdB | 
"A" caec"Bm" Bcde |"D" fddd fgfe |"G" dBAB GBdB |"A" cAdB eAAA | afec"Bm" B4 :|  