Construct a piece of music using the designated motif as the basis, while ensuring the required form is followed.
X:1
L:1/8
M:4/4
K:C
['ec c/c/c c2', 'cfeg a2 ag fedc |1 BGAB c2'  
X:1
L:1/8
M:4/4
K:C
 ec c/c/c c2 ec | fedc Bagf | ec c/c/c c2 ac |1 BGAB c2 cf :|2 BGAB c2 cG |: EFGF EcGc | 
 BcdB cfeg | a2 ag fedc |1 BGAB c2 cG :|2 BGAB c2 ||  