Write musical pieces that adapt to the predetermined chord shifts.
'A', 'D', 'A', 'Bm', 'E7', 'A', 'D', 'Bm', 'E7', 'A', 'A', 'D', 'A', 'Bm', 'E7', 'A', 'D', 'A', 'D', 'A', 'D', 'B', 'E7', 'A'  
X:1
L:1/8
M:2/2
K:A
|: E |"A" A2 Ac efec | eaec efec |"D" dfdB"A" cecA |"Bm" dcBA"E7" GABc |"A" A2 Ac efec | 
 eaec efec |"D" decd"Bm" BcAB |"E7" FAGB"A" A3 :: g |"A" a2 (3bag aAce | aAgA fAeA | 
"D" dfdB"A" cecA |"Bm" dcBA"E7" GABd |"A" (3cBA eA"D" fA"A"eA |"D" fgaf"A" ecAc |"D" decd"B" BcAB | 
"E7" FAGB"A" A3 :|  