Write musical pieces that adapt to the predetermined chord shifts.
'G', 'Am', 'Bm', 'Am', 'G', 'D', 'A7', 'D', 'G', 'Am', 'Bm', 'Am', 'D', 'D7', 'G', 'G', 'D', 'G', 'D', 'A7', 'D', 'G', 'D', 'D', 'D7', 'G', 'G', 'D', 'G', 'D', 'A7', 'D', 'G', 'Am', 'Bm', 'Am', 'D', 'D7', 'G'  
X:1
L:1/8
M:4/4
K:G
 D |"G" DG G2"Am" ABcA |"Bm" dedB"Am" cAAc |"G" B2 GB"D" A2 FA |"A7" GBAG"D" FDDG | 
"G" DG G2"Am" ABcA |"Bm" dedB"Am" cAAe |"D" fefg fedc |"D7" BcAB"G" G3 :| B |"G" dggf g2 fg | 
"D" abag fddc |"G" B2 GB"D" A2 FA |"A7" BGAG"D" FDDB |"G" dggf g2 fg |"D" abag fdde | 
"D" fefg fedc |"D7" BcAB"G" G3 |] B |"G" dggf g2 fg |"D" abag fddc |"G" B2 GB"D" A2 FA | 
"A7" BGAG"D" FDGA |"G" BG G2"Am" cA A2 |"Bm" dedB"Am" cAAe |"D" fefg fedc |"D7" BcAB"G" G3 |]  