Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/16
M:2/4
K:G
['Bd e2>d2 B2BB efed B2BA GFGB d2dd', 'a2aa edef g4 GBGB']  
X:1
L:1/16
M:2/4
K:G
 Bd | e2>d2 B2BB | efed B2BA | GFGB d2dd | BABc d2>d2 | efed BABd | efed d2dc | GFGB dedd | 
 B2A2A2 :: Bd | e2>e2 | a2aa | edef g4 | GBGB d2dd | BGBc d4 | ee2e a2aa | edef g4 | GBGB dedd | 
 B2A2A2 :|  