Compose songs in accordance with the specified chord transitions.
'D', 'A7', 'D', 'Em', 'D7', 'D', 'Em', 'D7', 'A7', 'D'  
X:1
L:1/4
M:3/4
K:D
|: A |"D" A A A | A B A |"A7" G F E |"D" D2 A/A/ | d A A | A G F |"Em" E G B |"D7" A2 A | 
"D" d A A | A G F |"Em" E G B |"D7" A2 F/G/ | A A A | A B A |"A7" G F E |"D" D/ :|  