Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
M:9/8
K:Amix
['f ecA', 'f ecA'  
X:1
L:1/8
M:9/8
K:Amix
 f | ecA ABA cef | gfg B2 c d2 f | ecA ABA ceg | a^ga c2 d ef=g | a^ga ecA ecd | gfg B2 c d2 f | 
 ecA f2 e fae | cAc BGB A2 :: f | ecA acA ecA | BGB gBG d2 f | ecA acA ecA | agf ecA e2 f/g/ | 
 agf ecA cef | gfg B2 c d2 f | ecA f2 e fae | cAc BGB A2 :|  