Compose a piece of music based on the provided motif and adhering to the outlined musical structure.
X:1
L:1/8
Q:1/4=60
M:2/4
K:C
['G2 c2 efed c2', 'A4 GBde fedc |1 Bcdf e2 c2'  
X:1
L:1/8
Q:1/4=60
M:2/4
K:C
 G2 c2 efed | c2 e2 g4 | eceg fedc |1 Bcdf e2 c2 :|2 BcdB c4 |: G2 c2 efed | c2 B2 A4 | 
 GBde fedc |1 Bcdf e2 c2 :|2 BcdB c4 ||  