Create a composition based on the provided motif while adhering to the necessary musical structure.
X:1
L:1/8
Q:1/4=100
M:4/4
K:C
['z2 AG FGAB c3 B', 'G4 E4 F4'  
X:1
L:1/8
Q:1/4=100
M:4/4
K:C
 z2 AG FGAB | c3 B AGFG | ABcA B4 | z2 AG FGAB | c3 B A2 G2 | G2 ^F2 G4 :: E4 F4 | G4 E4 | F4 G4 :|  