Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
Q:3/8=120
M:6/8
K:F
['FGF ABc cdc', 'F2 e f>gf a2 a e3- e2']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:F
 c/B/ | A>GF FGF | ABc cdc | BAG GAG | Bcd ded | AGF FGF | ABc cdc | cBA GcB | A2 G F2 :: e | 
 f>gf a2 a | e3- e2 a | d>ed a2 d | ^c3- c2 A | =B^cd cde | def efg | fed Ad^c | d2 D D2 :|  