Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
M:6/8
K:Bmin
['B2 F', 'cAc B2']  
X:1
L:1/8
M:6/8
K:Bmin
|: B2 F Bcd | c2 A cde | dcB cde | fgf edc | B2 F Bcd | c2 A cde | dcB AcA |1 FAc B2 F :|2 
 FAc B2 c |: def def | g2 f e3 | d2 d dcd | f2 d c2 B | dcB edc | fed g2 ^a | b2 f fed |1 
 cAc B2 c :|2 cAc B2 F ||  