Develop harmonious chord sequences to enhance the given tune.
|:"^A" B,2C/D/ C2B,/A,/ | B,2A, E3 | B,2C/D/ C2B,/A,/ |1 B,2A, E3 :|2 
 B,2A, A,3 |"^B" cde cde | cde c3 | cde cde | cde c3 | cde cde | cde c3 | c2d B2A | AA5 | 
 cde cde | cde c3 | cde cde | cde c3 | cde cde | cde c3 | c2d B2A | AA5 |:"^C" d2 z d2 z | 
 d2 z d2 z | e2 z d2 z | c5 z | B2c d3 | e3 d3 | c5 A |1 B3 e3 :|  
X:1
L:1/16
Q:1/4=150
M:6/16
K:A
|:"^A""C#m" B,2C/D/ C2B,/A,/ |"Bm" B,2A, E3 |"C#m" B,2C/D/ C2B,/A,/ |1"Bm" B,2A, E3 :|2 
"A" B,2A, A,3 |"^B""A" cde cde | cde c3 | cde cde | cde c3 | cde cde | cde c3 | c2d B2A | AA5 | 
 cde cde | cde c3 | cde cde | cde c3 | cde cde | cde c3 | c2d B2A | AA5 |:"^C""Dm" d2 z d2 z | 
 d2 z d2 z | e2 z d2 z | c5 z | B2c d3 | e3 d3 | c5 A |1 B3 e3 :|  