Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/16
Q:1/4=100
M:2/4
K:D
['AFDF AFDF', 'f2f2 fagf'  
X:1
L:1/16
Q:1/4=100
M:2/4
K:D
 (FG) | AFDF AFDF | A2d2 d2cB | AFDF AFDF | G2E2 E2FG | AFDF AFDF | A2d2 d2fg | afdf gece | 
 d2d2 d4 :: ag | f2f2 fagf | e2e2 egfe | f2f2 fagf | edcB A2g2 | f2f2 fagf | e2e2 egfe | 
 fafd egec | d2d2 d4 :|  