Compose a piece of music using the provided motif and follow the designated alphabet character structure.
X:1
L:1/8
M:4/4
K:Bb
['B2 FB', 'A2 fB B2 gB B2 fgfe dB']  
X:1
L:1/8
M:4/4
K:Bb
 B2 FB DBFB | B2 dB ABcA | B2 FB DBcd |1 egfe dBcA :|2 egfe dB B2 || f3 g fdBd | f2 df ec A2 | 
 fB B2 gB B2 | fgfe dB B2 | f3 g fdBd | f2 df ed c2 | egfd edcb | agfe dBcA ||  