Generate chord structures that harmonize with the provided piece of music.
A2 FA DAFA | GFEF GBdB | A2 FA DAFA | GBAG FDDB | A2 FA DAFA | 
 G E3 GBdB | A2 FA DAFA | GBAG FDDB :: Addc d2 dA | (3Bcd ef gfed | 
 (3cBA eA fAeA | cdef gfeg | faeg faeg | fddc defg | afge fdec | dBAG FD D2 :|  
X:1
L:1/8
M:2/2
K:D
"D" A2 FA DAFA |"G" GFEF"A" GBdB |"D" A2 FA DAFA |"A" GBAG"D" FDDB |"D" A2 FA DAFA | 
"G" G E3"A" GBdB |"D" A2 FA DAFA |"A" GBAG"D" FDDB ::"D" Addc d2 dA |"A" (3Bcd ef gfed | 
"A" (3cBA eA fAeA |"A" cdef gfeg |"D" faeg faeg |"D" fddc defg |"D" afge fdec |"A" dBAG"D" FD D2 :|  