Compose a musical piece by utilizing the given alphabetic form and motif.
X:1
L:1/8
M:2/2
K:Bb
['gBAB gBaB bBAB FBAB Gc=Bc', '', 'B2 dB']  
X:1
L:1/8
M:2/2
K:Bb
 (3FGA | B2 fB gBAB | gBaB bBAB | FBAB Gc=Bc | AecA BAGA | BBfB gBAB | gBaB bBAB | FBAB Gc=Bc | 
 AecA B2 :| (3FGA |: B2 dB fBAB | bagf egfd | B2 dB fBdB | AecA FAcA | BBdB fBAB | bagf egfd | 
 B2 dB fBdB |1 AecA BFGA :|2 AecA B2 ||  