Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
M:4/4
K:Bmin
['fbba f2', 'A4 BABf ABFG ede/f/g']  
X:1
L:1/8
M:4/4
K:Bmin
 fbba f2 ed | e2 ed ef f2 | fbba f2 d/e/f | e2 de fA A2 | fbba f2 ed | e2 ed ef f2 | dcba f2 ed | 
 edcA A4 |: BABf ABFG | ede/f/g fe d2 | ede/f/g fedB | BABF A4 | BABf ABFG | ede/f/g fedB | 
 ABfA F/G/FfF | F/G/Ffg fe d2 :|  