Construct musical compositions utilizing the given motif within the outlined structure.
X:1
L:1/8
M:4/4
K:E
['B2 Bc Bcef g2 ga gfec f2', 'f2 fg'  
X:1
L:1/8
M:4/4
K:E
 B2 Bc Bcef | g2 ga gfec | f2 fg fece | aAgA feec | B2 Bc Bcef | g2 ga gfec | f2 fg feec |1 
 Bcef e3 c :|2 Bcef e3 g |: beee bec'e | beee fece | f2 fg fece | aAgA feeg |1 beee bec'e | 
 beee fece | f2 fg feec | Bcef e2- e g :|2 B2 Bc Bcef | g2 ga gfec | f2 fg feec | Bcef e2- e2 |]  