Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
M:4/4
K:Dmix
['fage d2 dB AD (3FED EFGB A3', 'f2 df'  
X:1
L:1/8
M:4/4
K:Dmix
 fage d2 dB | AD (3FED EFGB | A3 B cGcd | ed (3B^cd efge :| f2 df afdf | f2 df efge | f2 df afdf | 
 eA (3B^cd efge | f2 df afdf | f2 df efge | fa a2 afdf | eA (3B^cd efge ||  