Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/4
M:3/4
K:C
['F2 G', 'C2 D E2 F G2 E'  
X:1
L:1/4
M:3/4
K:C
[K:Cmix] C2 D | G3 | F2 G | C2 C | E2 C | D2 G | F2 G | B,3 | C2 D | G3 | F2 G | C2 C | C2 G, | 
 B,2 C | D C2 | C3 || C2 D | E2 F | G2 E | C3 | E2 C | D2 G | F2 D | B,3 | C2 D | E2 F | G2 E | 
 C2 C | C2 G, | B,2 C | D C2- | C3 ||  