Develop a piece of music using the specified alphabetic notation system and the provided motif.
X:1
L:1/8
Q:1/2=90
M:2/4
K:Bb
['d2 cB', 'egbg (fd)cB (ec)BA B2 FD EGce dB']  
X:1
L:1/8
Q:1/2=90
M:2/4
K:Bb
{Bc} d2 cB | (G<B) (F<B) |{Bc} d2 cB | A(cec) |{Bc} d2 cB | (G<B) (F<B) | (df)(cd) | B2 z2 :: 
 b2 fd | egbg | (fd)cB | (ec)BA | B2 FD | EGce | dB cA | B2 z2 :|  