Construct a musical piece that follows the designated lettered structure and integrates the provided motif throughout.
X:1
L:1/8
M:6/8
K:D
['A GBB FAd fed cBc ABc dcB', 'fed cBc ABc dfe']  
X:1
L:1/8
M:6/8
K:D
 A |:"D" FAA"G" GBB |"D" FAd fed |"A7" cBc ABc |"D" dfe"G" dcB |"D" FAA"G" GBB |"D" FAd fed | 
"A7" cBc ABc |"D" dfe d3 ::"Bm" dBB fBB | dBd fed |"A" cAA eAA | cBc edc |"Bm" dBB fBB | dBd fed | 
"A7" cBc ABc |"D" dfe d3 :|  