Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
M:4/4
K:A
['F2 AF', 'fecB B2']  
X:1
L:1/8
M:4/4
K:A
 F2 AF F2 AF | E2 CF E2 CE | F2 AF EFAB | cABc AFFE | F2 AF F2 AF | E2 CF E2 CE | F2 AF EFAB | 
 cABc AFFE :| fecB B2 cB | AF F2 EA,CE | fecB B2 AB | cffe f3 f- | fecB B2 cB | AF F2 E2 CE | 
 F3 F EFAB | cABc AFFE :|  