Design a suitable chord progression that aligns with and enriches the provided tune.
A,DDE FEEB, | A,DDE FA B2 | B,B,DE FEED | z B, A,B, D2 D2 :: d2 BA B2 AF | 
 z d BA FA B2 | d2 BA B2 AF | ED D/D/D EF B2 :|  
X:1
L:1/8
M:4/4
K:D
"D" A,DDE FEEB, | A,DDE FA B2 |"Em7" B,B,DE FEED | z B, A,B, D2 D2 ::"D/F#" d2 BA B2"Em7" AF | 
 z d"D/F#" BA FA"Em7" B2 |"D/F#" d2 BA B2"Em7" AF | ED"D/F#" D/D/D EF"Em7" B2 :|  