Write musical pieces that adapt to the predetermined chord shifts.
'D', 'G', 'Em', 'D7', 'G', 'Am', 'D', 'D', 'G', 'Em', 'D7', 'G', 'Am', 'D', 'G', 'Em', 'G', 'Em', 'Am', 'D', 'G', 'Em', 'G', 'Em', 'Am', 'D'  
X:1
L:1/8
Q:1/4=190
M:4/4
K:Dmix
 ge |"D" dBAc"G" BGGA | BcBA"Em" B2 ge |"D7" dBAc"G" BGGB |"Am" Aaag"D" a2 ge |"D" dBAc"G" BGGA | 
 BcBA"Em" B2 GB |"D7" dBAc"G" BGBd |"Am" eaag"D" a2 || ef |"G" gfge gbae | gfga"Em" beef | 
"G" gfga"Em" bagf |"Am" eaag"D" a2 ef |"G" gfge gbae | gfga"Em" beeg |"G" (3BAG af"Em" gfed | 
"Am" eaag"D" a2 ||  