Produce musical creations adhering to the designated chord transitions.
'D', 'Em', 'A7', 'D', 'D', 'Em', 'A7', 'D', 'D', 'A7', 'D', 'D', 'A7', 'D'  
X:1
L:1/4
M:3/4
K:D
"D" F3/2 G/ A | D E F |"Em" G2 B | E2 A |"A7" c3/2 B/ A | G A G |"D" F2 G | A3 |"D" F3/2 G/ A | 
 D E F |"Em" G2 B | E2 A |"A7" c3/2 B/ A | G F E |"D" D3 | D3 ||"D" f3/2 e/ d | F A d |"A7" c2 B | 
 E2 A | c3/2 B/ A | G A G |"D" F2 G | A3 |"D" f3/2 e/ d | F A d |"A7" c2 B | E2 A | c3/2 B/ A | 
 G F E |"D" D3 | D3 |]  