Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:9/8
K:Emin
['edB BAB G2 A B2', 'e3 def g3 fed B2 d deB'  
X:1
L:1/8
M:9/8
K:Emin
|: edB BAB G2 A | B2 d deB dgf | edB BAB G2 A | B2 e efd e3 :: def g3 fed | B2 d deB d2 B | 
 deg age dBA | B2 e efd e3 :|  