Develop an appropriate set of chord transitions to enhance the existing music piece.
d | cee Ace | dfa ecA | def ecA | GBB B2 d | cee efg | agf ecA | 
 f{g}af ecA | BAA A2 :: d | cAA eAA | f{g}af ecA | cAA eAA | 
 GBB B2 d | cAA eAA | f{g}af ecA | agf eac | BAA A2 :|  
X:1
L:1/8
M:6/8
K:A
 d |"A" cee Ace |"D" dfa"A" ecA |"D" def"A" ecA |"Bm" GBB"E7" B2 d |"A" cee efg |"D" agf"A" ecA | 
"D" f{g}af"A" ecA |"E7" BAA"A" A2 :: d |"A" cAA eAA |"D" f{g}af"A" ecA |"A" cAA"F#m" eAA | 
"Bm" GBB"E7" B2 d |"A" cAA eAA |"D" f{g}af"A" ecA |"D" agf"A" eac |"E7" BAA"A" A2 :|  