Craft a fitting chord progression to merge seamlessly with the given musical theme.
|: F2 AF EFDE | F2 AF EA AA | F2 FE DEFA | (3Bcd AF E2 DE | 
 F2 AF DFAF | F2 AF EA A2 | F2 FE DEFA | (3Bcd AF D3 A :: 
 f2 df e2 df | afeg fB (3BAB | f2 df af (3fef | bfaf e2 de | 
 fa (3aba egfe | dfed BcdA | F2 FE DEFA | (3Bcd AF D3 :|  
X:1
L:1/8
M:4/4
K:D
|:"D" F2 AF"G" EFDE |"D" F2 AF"A" EA AA |"D" F2 FE"G" DEFA |"D" (3Bcd AF"Em" E2 DE | 
"D" F2 AF"D" DFAF |"D" F2 AF"A" EA A2 |"D" F2 FE"D" DEFA |"D" (3Bcd AF"D" D3 A :: 
"D" f2 df"Em" e2 df |"D" afeg"Bm" fB (3BAB |"D" f2 df"D" af (3fef |"Bm" bfaf"A" e2 de | 
"D" fa (3aba"Em" egfe |"D" dfed"Bm" BcdA |"D" F2 FE"D" DEFA |"Bm" (3Bcd AF"D" D3 :|  