Construct melodic chord frameworks to improve the given piece of music.
A |: Ad dc | d2 de | f2 e2 | d3 d | c2 e2 | d2 A=B | c2 =B2 | 
 A3 a | ag aa/g/ | f3 g | ab ag/f/ | e3 e | dc de | fg ag | f2 e2 | 
 d3 A :|  
X:1
L:1/8
M:2/4
K:Dmin
"A7" A |:"A7" Ad dc |"Dm" d2 de |"Dm" f2 e2 |"Dm" d3 d |"A7" c2 e2 |"Dm" d2 A=B |"A7" c2 =B2 | 
"A7" A3 a |"A7" ag aa/g/ |"Dm" f3 g |"A7" ab ag/f/ |"A7" e3 e |"Dm" dc de |"Dm" fg ag |"Dm" f2 e2 | 
"Dm" d3 A :|  