Construct a tune that adheres to the designated chord progression.
'D', 'G', 'Em', 'A7', 'D', 'D', 'G', 'Em', 'D', 'A7', 'D', 'D', 'D7', 'G', 'D', 'E7', 'A7', 'A7', 'D'  
X:1
L:1/8
M:2/4
K:D
"D" Af ed | A3 A/-A/ | Af ed |"G" B4 |"Em" Bg fe |"A7" c3 a | ba ge |"D" f4 || |"D" Af ed | 
 A3 A/-A/ | Af ed |"G" B3 B |"Em" Bg fe |"D" aa aa |"A7" ba ge |"D" d2 z2 |:"D" ff f2 | ff f2 | 
 fa d>e |"D7" f4 |"G" gg g>g |"D" gf ff/f/ |1"E7" fe ef |"A7" e2 a2 :|2"A7" aa ge |"D" d4 |]  