Formulate chord sequences to heighten the harmonic quality of the specified musical portion.
c/d/ | efe dcB | A2 c E2 c | c^Bc edc | B3- B2 c/d/ | efe dcB | 
 A2 c E2 e | gfe dcB | A3- A2 :: c/d/ | e2 c a2 g | f2 d b2 a | gBB Bdf | 
 e3- e2 c/d/ | e2 c a2 g | f2 d b2 a | gfe dcB | A3- A2 :|  
X:1
L:1/8
M:6/8
K:A
 c/d/ |"A" efe"E7" dcB |"A" A2 c E2 c | c^Bc"Edim" edc |"E7" B3- B2 c/d/ |"A" efe"E7" dcB | 
"A" A2 c E2 e |"E7" gfe dcB |"A" A3- A2 :: c/d/ |"A" e2 c a2 g |"D" f2 d"Bm" b2 a |"E7" gBB Bdf | 
"A" e3- e2 c/d/ | e2 c a2 g |"D" f2 d"Bm" b2 a |"E7" gfe dcB |"A" A3- A2 :|  