Develop a melody while staying within the specified chord structure.
'D', 'D', 'Em', 'A7', 'D', 'D', 'A7', 'D', 'D', 'Em', 'A7', 'D', 'A7', 'D', 'Em', 'A7', 'D'  
X:1
L:1/8
M:4/4
K:D
"^A" (3fg^g |"D" a2 a2 f2 f2 |"D" dA^GA B2"^d#" A2 |"Em" g2 g2 e2 e2 |"A7" cA^GA B2 A2 | 
"D" a2 a2 f2 f2 |"D" dA^GA B2"^d#" A2 |"A7" cAce ba(3gfe |"D" d2 f2 d2 :|"^B" e2 | 
"D" f^e(3fga d2 d2 |"Em" e^d(3efg B2 B2 |"A7" cBcB Acec |"D" dcdf"A7" b2 ag |"D" f^e(3fga d2 d2 | 
"Em" e^d(3efg B2 B2 |"A7" cBcB Acec |"D" d2 f2 d2 :|  