Formulate chord sequences to heighten the harmonic quality of the specified musical portion.
x8 | x8 | x8 | x8 x8 | x8 | x8 | x8 x8 | x8 | x8 | x8 x8 | x8 | x8 | x8"^Intro" | x8 | x8 | x8 | 
 x8 || z D2 E F4 | z F2 ^G A4 | z A2 B cBc^d | e4 | z4 |:"^in E:" z B2 ^A B2 ^G2 | 
 z A2 F ^G2 E2 | z D2 E FA^GF |1 EF^GA B2 e2 :|2 E4- EEAB |: 
 c3 e"^(B7)" ^dcBA | ^G/A/B- B2- BEAB | c2 e2"^(B7)" ^dcBA |1 B4- BEAB :|2 
 e2 e2 e2 z2 |]:[K:Dmin]"^in A:" z e2 ^d e2 ^c2 | z d2 B ^c2 A2 | z G2 A Bd^cB |1 
 AB^cd e2 a2 :|2 A4- AAde |: f3 a"^(E7)" ^gfed | ^c/d/e- e2- eAde | 
 f2 a2"^(E7)" ^gfed |1 e4- eAde :|2 a2 a2 a2 z2 |]  
X:1
L:1/8
M:4/4
K:Amin
 x8 | x8 | x8 | x8 x8 | x8 | x8 | x8 x8 | x8 | x8 | x8 x8 | x8 | x8 | x8"^Intro" | x8 | x8 | x8 | 
 x8 ||"Dm" z D2 E F4 | z F2 ^G A4 |"B7" z A2 B cBc^d |"E" e4 | z4 |:"^in E:""E" z B2 ^A B2 ^G2 | 
"Dm" z A2 F"E" ^G2 E2 |"Dm" z D2 E FA^GF |1"E" EF^GA B2 e2 :|2"E" E4- EEAB |: 
"Am" c3 e"^(B7)" ^dcBA |"E" ^G/A/B- B2- BEAB |"Am" c2 e2"^(B7)" ^dcBA |1"E" B4- BEAB :|2 
"E" e2 e2 e2 z2 |]:[K:Dmin]"^in A:""A" z e2 ^d e2 ^c2 |"Gm" z d2 B"A" ^c2 A2 |"Gm" z G2 A Bd^cB |1 
"A" AB^cd e2 a2 :|2"A" A4- AAde |:"Dm" f3 a"^(E7)" ^gfed |"A" ^c/d/e- e2- eAde | 
"Dm" f2 a2"^(E7)" ^gfed |1"A" e4- eAde :|2"A" a2 a2 a2 z2 |]  