Create musical compositions adhering to the given structure and incorporating the provided musical concept.
X:1
L:1/4
Q:1/4=100
M:4/4
K:G
['g f e d c B A', 'B c/B/A/G/ B2 B'  
X:1
L:1/4
Q:1/4=100
M:4/4
K:G
|: g f e d | c B A G | G/A/B/c/ d B | (3(B/c/B/) A A3/2 d/ | g f e d | c B A G | G/A/B/c/ d b | 
[M:2/4][Q:1/4=200] a g |[M:4/4][Q:1/4=100] a g g2 :: B B/B/ B B | c/B/A/G/ B2 | B B/B/ B B | 
 A/G/F/E/ D2 | B B/B/ B B | c/B/A/G/ B2 | B c/B/ A B/A/ | G2 G2 :|  