Develop a musical piece using the given theme and incorporating the letter-based structure provided.
X:1
L:1/8
M:4/4
K:D
['AFBF AFBF ABcd', 'd2 bafd dc c2 B>BBc BA A2', 'f2 ef/e/ dd dB/c/ dded', 'A2 FAFE DFBF AGGF G2- GA B2']  
X:1
L:1/8
M:4/4
K:D
|: AFBF AFBF | ABcd dcG>G | GEBE GEBE | GABc BAF>G | AFBF AFBF | ABcd eB B2 | edcB BA A2 | 
 ^GABc d2 d2 :: bafd dc c2 | B>BBc BA A2 | ^GABc dcdf | ba^gb a2 d>d | dced cB B2 | ^GABc BA F2 | 
 EFGA Bced | c/B/A G/F/E D2- D2 :: f2 ef/e/ dd dB/c/ | dded dc c2 | g2 fg/f/ ee e2 | eefd dcBA | 
 f2 ef/e/ dd dB/c/ | dded c2 B2 | B2 Bc/d/ e2 ef | edcB A2- A2 :: FAFE DFBF | AGGF G2- GA | 
 B2 B>B BBcB | BAA^G A2 Bc | d2 dc/d/ edAB | cBBA B2- BB | ccc>B AABc | eddc d2- d2 :|  