Develop a musical composition centered around the provided motif while maintaining the appropriate form.
X:1
L:1/8
Q:1/2=100
M:4/4
K:C
['c2 ec A2 dc', 'e2 eg f2 fa'  
X:1
L:1/8
Q:1/2=100
M:4/4
K:C
 GB | c2 ec A2 dc | (Bd)gf (ed)cB | c2 ec A2 dc | BGAB c2 :: cd | e2 eg f2 fa | (ga)gf fedc | 
 e2 eg f2 fa | gage c2 :|  