Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
M:2/4
K:C
['e2 cB']  
X:1
L:1/8
M:2/4
K:C
 Bcdc | e2 cB | G4 | efge | g2 ae | fedB | c2 de | fedc | e2 cB | G4 |]  