Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
['AF F2 BFAF DEFA BABd', 'afbf afdf'  
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
 dB | AF F2 BFAF | DEFA BABd | eB B2 egfe | dfed BcdB | AF F2 BFAF | DEFA BABd | egfg efdB | 
 AFGE D2 :| A2 | d2 de fefg | afbf afdf | eB B2 gB B2 | fedf edBd | AF F2 ABdf | afbf afdf | 
 g2 fg efdB | AFGE D2 :|  