Compose a piece of music following the given chord progression.
'D', 'Em', 'A7', 'D', 'Bm', 'Em', 'A7'  
X:1
L:1/8
Q:1/8=180
M:6/8
K:D
"D" F2 D D2 D | F2 G A>GF |"Em" G2 E E2 E |"A7" G2 A B>AG |"D" F2 D D2 D |"Bm" d2 d c>BA | 
"Em" G2 E E2 E |"A7" e2 d c>BA :|  