Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
M:4/4
K:Amix
['A2 (3AAA ABde effd edBd e2 e2', 'ad d2 adBd a d3 edBd e2'  
X:1
L:1/8
M:4/4
K:Amix
|: A2 (3AAA ABde | effd edBd | e2 e2 edBd | gd fd ed Bd | A2 (3AAA ABde | effd edBd | e2 e2 edBd | 
 fdec d2 (3AAA :: ad d2 adBd | a d3 edBd | e2 e2 edBd | gdfd edBd | ad d2 adBd | a d3 edBd | 
 e2 e2 edBd | gdfd edBd :|  