Construct musical creations that are consistent with the prescribed chord shifts.
'D', 'G', 'A7', 'D', 'G', 'A7', 'D', 'D', 'G', 'D', 'G', 'A7', 'D', 'G', 'D', 'G', 'A7', 'D'  
X:1
L:1/16
M:2/4
K:D
 fg |"D" abag f<d(3def |"G" gBed"A7" c<AA2 |"D" abag f<ddf |"G" B<d"A7"c<e"D" d2 :: de | 
"D" fd"G"ge"D" f<d(3def |"G" gBed"A7" c<AA2 |"D" fd"G"ge"D" f<ddf |"G" B<d"A7"c<e"D" d2 :|  