Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/16
M:2/2
K:D
['F2d2 d2cB c2e2', 'd4 Bc dAFc dfed edcB A2fa gfed'  
X:1
L:1/16
M:2/2
K:D
 F2d2 d2cB c2e2 e2dc | d2f2 fgaf edcB AGFE | F2d2 d2cB c2e2 e2ag | f2ed Adce d2d2 d4 :: Bc | 
 dAFc dfed edcB A2fa | gfed edef edcB A2Ac | BGGG dGGG AFFF A2eg | f2ed Adce d2D2 D4 :|  