Construct tunes that adhere to the specified chord alterations.
'A', 'D', 'A7', 'D', 'G', 'D', 'A7', 'D', 'G', 'D', 'A7', 'D', 'B', 'D', 'D', 'G', 'G', 'D', 'A7', 'D', 'D', 'G', 'D', 'A7', 'D', 'D', 'A7', 'D', 'G', 'D', 'A7', 'D'  
X:1
L:1/8
M:2/2
K:D
"A" |: A>d |"D" f4"A7" a>g e>f |"D" d2 A2 A2 d>c |"G" B>G B>c"D" d>e f<a |"A7" e4 e2 || A>d | 
"D" f4 a>g e>f |"G" d>e d>c B2 a>g |"D" f<a f>d"A7" A>c e<c |"D" d4 d2 :|"B" |: f>g | 
"D" a>A A<A f>A A<A |"D" d>e d>c"G" B2 d>c |"G" B>G B>c"D" d>e f<a |"A7" e4 e2 ||1 f>g | 
"D" a>A A<A f>A A<A |"D" d>e d>c"G" B2 a>g |"D" f<a f>d"A7" A>c e<c |"D" d4 d2 :|2 A>d | 
"D" f4"A7" a>g e>f |"D" d>e d>c"G" B2 a>g |"D" f<a f>d"A7" A>c e<c |"D" d4 d2 |]  