Write musical pieces that adapt to the predetermined chord shifts.
'G', 'C', 'D7', 'G', 'D', 'G', 'Em', 'C', 'D', 'G', 'D', 'G', 'G', 'C', 'D7', 'G', 'D', 'G', 'C', 'D', 'G', 'D', 'G'  
X:1
L:1/8
M:6/8
K:G
|: D |"G" GDG BAG |"C" ECE"D7" D2 c |"G" BAG dBG |"D" FAA ABc |"G" BAB"Em" GFG |"C" ECE"D" D2 c | 
"G" BAG"D" FGA |"G" AGG G2 :: d |"G" Bcd g2 d |"C" ece"D7" d2 c |"G" BAG dBG |"D" FAA A2 c | 
"G" Bcd g2 d |"C" ece"D" d2 c |"G" BAG"D" FGA |"G" AGG G2 :|  