Create a musical composition using the given motif and adhering to the specified musical form represented by alphabet characters.
X:1
L:1/8
M:4/4
K:Bmin
['dBBA B2', 'd2 fd efge defa g2', 'fa a2']  
X:1
L:1/8
M:4/4
K:Bmin
 dBBA B2 Bc | dB B2 f2 ef | dBBA B2 dB | ABde f2 ef | dBBA B2 Bc | dB B2 f2 fg | aAAF ABAF | 
 ABde f2 ef || d2 fd efge | defa g2 fe | d2 fd efge | defa g2 fe | d2 fd efge | defa g2 ga | 
 bgaf gfed | faafgfed || fa a2 fa a2 | faaf gfed | gb b2 gb b2 | gbbf gfed | fa a2 fa a2 | 
 faaf g2 ga | bgaf gfed | faaf gfed ||  