Devise musical works that conform to the prescribed chord transitions.
'D', 'A', 'D', 'G', 'A7', 'D', 'D', 'A7', 'D', 'D', 'G', 'Em', 'D', 'A7', 'D', 'A7', 'D', 'A7', 'D'  
X:1
L:1/4
Q:1/4=200
M:4/4
K:D
 d/c/ |"D" d D F A | d D D d/c/ | d D F A |"A" e E E d/c/ |"D" d D F A |"G" B g f e | 
"A7" d/c/B/A/ B c |"D" d D D :: f/g/ |"D" a f"A7" g e |"D" f d d f/g/ |"D" a f"G" g/f/g/a/ | 
"Em" b e e f/g/ |"D" a f"A7" g e |"D" f d"A7" e c |"D" d/c/B/A/"A7" B c |"D" d D D :|  