Write musical pieces that adapt to the predetermined chord shifts.
'A', 'A', 'D', 'D', 'A', 'A', 'D', 'E', 'A', 'A', 'D', 'E', 'A', 'A', 'D', 'A', 'E', 'A', 'D', 'E', 'A', 'A', 'D', 'E', 'A'  
X:1
L:1/8
M:4/4
K:A
|: GF |"A" E2 c2 c4 |"A" cBAc BAFE |"D" F2 d2 d4 |"D" fgaf ecBA |"A" E2 c2 c4 |"A" cBAc BABc | 
"D" dcde fgaf |"E" ecBc"A" A2 :: z2 |"A" ecea"D" fdfa |"E" gefg"A" a2 eg |"A" agae"D" fgaf | 
"A" ecBA"E" B2 cd |"A" ecea"D" fdfa |"E" gefg"A" a2 eg |"A" agae"D" fgaf |"E" ecBc"A" A2 :|  