Create musical compositions adhering to the given structure and incorporating the provided musical concept.
X:1
L:1/8
M:2/4
K:none
['', 'cD FA', 'ce/d/ BD GB d2 z2 :|2 cf'  
X:1
L:1/8
M:2/4
K:none
[K:G] e/d/ |: BD GB | d/g/d/g/ Be/d/ |"_c" cD FA | d/f/d/f/"_c" ce/d/ |"_c" cD FA |1 
 d/f/d/f/"_c" ce/d/ | BD GB | dd/g/ Be/d/ :|2 d/f/d/f/"_c" cf | g2 g>g | g2 z2 |: ee/e/ ee | 
 f2 e2 | db gd | B/g/B/g/ Be/d/ |"_c" cD FA |1 d/f/d/f/"_c" ce/d/ | BD GB | d2 z2 :|2 
 d/f/d/f/"_c" cf | g2 g>g | g2 z2 |]  