Write musical pieces that adapt to the predetermined chord shifts.
'A', 'G', 'A', 'D', 'A', 'A', 'G', 'A', 'D', 'A', 'A', 'G', 'D', 'G', 'A', 'G', 'D', 'A', 'A', 'G', 'D', 'A', 'D', 'G', 'D', 'A'  
X:1
L:1/8
M:2/2
K:D
 ed |"A" c2 AB cdec |"G" d2 gd BGGB |"A"{d} cBAB cdec |"D" dfec"A" Aced |"A"{d} cBAB cdec | 
"G" d2 gd BGGB |"A"{d} cBAB cdec |"D" dfec"A" A2 |] AB |"A" cdef{a}"G" g2 eg |"D" fddf"G"{a} gfed | 
"A" cdef{a}"G" gfeg |"D" fdec"A" A2 AB |"A" cdef{a}"G" gfeg |"D" fddf"A" e2 fg | 
"D" af{a}ge"G" fdec |"D" dfec"A" A2 |]  