Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
M:3/8
K:G
['A G/ F/ E']  
X:1
L:1/8
M:3/8
K:G
 A B A | A G/ F/ E | A A A/ B/ | A3 | A G/ F/ E | D3 | E A G | A B/ A/ G |[M:2/8] E/ D/ C | 
[M:3/8] D2 G | E D C/ B,/ | A,3 |]  