Create musical compositions adhering to the given structure and incorporating the provided musical concept.
X:1
L:1/8
M:2/4
K:A
['A2 A>E FA FE', 'A2 Ae Ae f2 f2 Bf Bf'  
X:1
L:1/8
M:2/4
K:A
 A2 A>E | FA FE | FB BA/B/ | cB B2 | A2 A>E | FA FE | AA BA/B/ | cA A2 :: Ae Ae | f2 f2 | Bf Bf | 
 g2 g2 | cg cg a2 | g>f | ec BA/B/ | cA A2 :|  