Develop a musical piece using the given motif and adhere to the outlined musical structure.
X:1
L:1/8
M:4/4
K:D
['AF FF ED BA D2 FD FA', 'de fg a3 b af df'  
X:1
L:1/8
M:4/4
K:D
 AF FF ED BA | D2 FD FA AA | ddfd efdB | AF DE FE E2 | AF FF ED BA | D2 FD FA AB | ABde dBAF | 
 AB EG FA D2 :: de fg a3 b | af df eB B2 | de fg a3 b | af df e4 | fddd Addd | edcd egfe | 
 dB AF A3 F | AB EG FA D2 :|  