Design a musical work that abides by the outlined structure and integrates the assigned theme.
X:1
L:1/8
M:7/8
K:Emin
['BeeB efg', 'B2 BA'  
X:1
L:1/8
M:7/8
K:Emin
 BeeB efg | Beeg fed | BeeB efg | fede fga :| B2 BA GAB | B2 BA Bcd | B2 BA GAB | AAAG FGA :|  