Compose a musical work using the designated alphabetic notation and the supplied motif.
X:1
L:1/8
Q:1/2=100
M:2/4
K:G
['b2 gb af d2', 'd2 Bd']  
X:1
L:1/8
Q:1/2=100
M:2/4
K:G
 d | b2 gb | af d2 | efge | dB G2 | b2 gb | af d2 | egfa | g2 :: d | d2 Bd | e2 ce | d2 Bd | 
 cA A2 | d2 Bd | e2 ag | fdef | g2 :|  