Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
M:6/8
K:Bb
['d d2']  
X:1
L:1/8
M:6/8
K:Bb
 d | d2 B e2 d | d2 cBzf | f2 B A2 B | c3 z2 c | c2 F d2 B | e>fd/e/czg | f2 d c2 d | B3 z2 |]  