Develop a piece of music by incorporating the provided motif and following the outlined musical structure represented by alphabet characters.
X:1
L:1/8
M:4/4
K:Bmin
['B2 BA', 'F4 F2 EF']  
X:1
L:1/8
M:4/4
K:Bmin
 FA | B2 AB B2 BA | Ad z c B2 BA | BA A2 AF A2- | A4 z DDE | G4 F2 D2- | D4 z B,A,B, | F6 GF | 
 E6 :| DE | F4 F2 EF | G3 F GABc | d4 d e2 d | c4- cBAG | F4 F2 EF | G6 F2 | A8- | A2 AB AGFD | 
 F4 F2 EF | G3 F GABc | d4 d e2 f | c4- cBAG | F4 F2 EF | G6 F2 | D8- | D6 ||  