Construct a musical composition utilizing the provided motif and conforming to the specified structure.
X:1
L:1/8
M:2/4
K:A
['e c']  
X:1
L:1/8
M:2/4
K:A
 E2 E F | A4 | e c B A/ F/ | E4 | A B3 | e c B2 | A B A F | E4 | A3/2 c/ B2 | B e c B | 
 c2 E3/2 F/ | A4 | c3/2 B/ A F | E3/2 F/ A2 | F E C B, | E4 |]  