Write a tune that sticks to the prescribed chord sequence.
'D', 'Em', 'D', 'A7', 'D', 'Em', 'D', 'A7', 'D', 'D', 'Em', 'D', 'A7', 'D', 'D', 'Em', 'D', 'A7'  
X:1
L:1/8
Q:1/4=200
M:4/4
K:D
 fe |"D" d2 Ad BdAB | d2 fd"Em" edBc |"D" d2 Ad BdAc |"A7" (3Bcd ef g2 fe |"D" d2 Ad BdAB | 
 d2 fd"Em" edBc |"D" d2 Ad BdAc |"A7" (3Bcd ef g2 fg ||"D" a f3 d f3 |"D" a f3"Em" g2 fg | 
"D" a f3 dfed |"A7" (3Bcd ef g2 fg |"D" a f3 d f3 |"D" a f3"Em" g2 fg |"D" a f3 dfed | 
"A7" (3Bcd ef g2 fe ||  