Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/16
M:2/4
K:F
['A2c2 f2cB A2c2 a2>f2 e2g2', 'f2 c2 fgag fedc cBdc BAGF EFGA', 'a2c2 g2c2', 'gfed cdef gbag f4 e4 a2c2 g2c2']  
X:1
L:1/16
M:2/4
K:F
 cB | A2c2 f2cB | A2c2 a2>f2 | e2g2 b2>g2 | fagf edcB | A2c2 f2cB | A2c2 a2>f2 | e2g2 gbge | 
 f2a2 f2 :: c2 | fgag fedc | cBdc BAGF | EFGA Bcde | fegf edcc | A2c2 f2cB | A2c2 a2>f2 | 
 e2g2 gbge | f2a2 f2 :: fg | a2c2 g2c2 | f2ed c2c2 | b2d2 a2=B2 | gfed c4 | a2c2 g2c2 | f2fg f2e2 | 
 d2ba gfef |1 g4 f2 :|2 g4 f2cA |: F2Ac fcAc | G2Bd gfed | cdef gbag | f4 e4 | a2c2 g2c2 | 
 f2fg f2e2 | d2ba gfef | g4 f4 :|  