Compose a piece of music following the given alphabetical representation of the musical structure and the provided motif.
X:1
L:1/16
M:4/4
K:Emin
['E2B2 B2AB', 'E2E2 F2GF E2E2 F2_FG A2F2 B2AG', 'E2B2 B2_BA G2E2 E4 A2G2 F2E2', 'EFGA B2B2']  
X:1
L:1/16
M:4/4
K:Emin
 E2B2 B2AB | C2B2 A2FG | A2F2 B2AG | FGEF G2F2 | E2B2 B2AB | A2F2 B2AG | FEFG E4 :| E2E2 F2GF | 
 E2E2 F2_FG | A2F2 B2AG | FGEF G2F2 | E2E2 F2GF | E2E2 F2_FG | A2F2 B2AG | FEFG E4 :| E2B2 B2_BA | 
 G2E2 E4 | A2G2 F2E2 | D2EF2 G2FG | E2B2 B2_BA | G2E2 E4 | A2G2 F2E2 | DEFD E4 :| EFGF EFGF | 
 EFGA B2B2 | DEFE D2_DE | F2A2 G2FG | EFGF EFGE | EFGA B2B2 | DEFG F2_FA | G2F2 E4 :|  