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:Bmin
['fBBc d2', 'faag f2', 'fB B/B/B', 'B2 de faag fded cAAB cAce']  
X:1
L:1/8
M:4/4
K:Bmin
 ce | fBBc d2 ed | c2 AB cAce | fBBc d2 ec | Afec B2 :| de | faag f2 ed | c2 AB cAce | faag f2 ec | 
 Afec B2 de | faag f2 ed | c2 AB cAce | fBBc d2 ec | Afec B2 || ce | fB B/B/B dBed | cAAB cAce | 
 fB B/B/B dBec | Afec B2 :| de | faag fded | cAAB cAce | faag fdec | Afec B2 de | faag fded | 
 cAAB cAce | fBBc d2 ec | Afec B2 ||  