Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/16
M:2/4
K:Bb
['f2 dB e2 cA', 'f2f2f2 (de) fedc Bagf e2c2 c2(cd) edcB']  
X:1
L:1/16
M:2/4
K:Bb
 (de) | f2 dB e2 cA | GBFB GBFB | cdec BAGF | f2 dB e2 cA | d2b2 b2(ga) | bagf =efge | f2f2f2 :: 
 (de) | fedc Bagf | e2c2 c2(cd) | edcB Agfe | d2B2 B2F2 | GeFd EcDB | EeFd EcDB | cdec ABcA | 
 B2B2B2 :|  