Build a series of chord progressions that fit well with the existing melody.
"^A1" A, C | D3/2 D/ D F | A3 F | G B d B | A3 F | G3/2 F/ E G | F3/2 E/ D F | 
 E B, C D | E/F/E/D/ C/B,/ A, |"^A2" D3/2 D/ D F | A3 F | G/A/ B d B | A3 F | 
 G3/2 F/ E G | F3/2 E/ D F | E B, C A, | D d c =c || 
"^B1" [Bd]2 [Bd]3/2 [Bd]/ | [Bd] d (3c/d/c/ B | [Ad]2 [Fd]2 | z [Ad] [Bd] [Ad] | 
 [Ac]2 [Ec]2- | [Ec] [Ac] [Bd] [Ac] | [Ad]2 [Fd]2- | [Fd] d e d | 
"^B2" [Bd]2 [Bd]3/2 [Bd]/ | [Bd] d (3c/d/c/ B | [Ad]2 [Fd]2 | z [Ad] [Bd] [Ad] | 
 [Ac]2 [Ec]2- | [Ec] E/G/ F/E/ C | [FD]4- | [FD] z |]  
X:1
L:1/4
M:4/4
K:D
"^A1" A, C |"D" D3/2 D/ D F | A3 F |"G" G B d B |"D" A3 F |"A7" G3/2 F/ E G |"D" F3/2 E/ D F | 
"E7" E B, C D |"A7" E/F/E/D/ C/B,/ A, |"^A2""D" D3/2 D/ D F | A3 F |"G" G/A/ B d B |"D" A3 F | 
"A7" G3/2 F/ E G |"D" F3/2 E/ D F |"E7" E B,"A7" C A, |"D" D d c =c || 
"^B1""G" [Bd]2 [Bd]3/2 [Bd]/ | [Bd] d (3c/d/c/ B |"D" [Ad]2 [Fd]2 | z [Ad] [Bd] [Ad] | 
"A7" [Ac]2 [Ec]2- | [Ec] [Ac] [Bd] [Ac] |"D" [Ad]2 [Fd]2- | [Fd] d"D7" e d | 
"^B2""G" [Bd]2 [Bd]3/2 [Bd]/ | [Bd] d (3c/d/c/ B |"D" [Ad]2 [Fd]2 | z [Ad] [Bd] [Ad] | 
"A7" [Ac]2 [Ec]2- | [Ec] E/G/ F/E/ C |"D" [FD]4- | [FD] z |]  