Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:6/8
K:Emin
['GAB A2'  
X:1
L:1/8
M:6/8
K:Emin
|:"Em" E2 E EDB, |"G" G3 GAB |"D" A2 A ABA | d3 d2 e | d2 B GAB | A2 F DEF |"G" G2 E"D" FED | 
"Em" E3 E3 ::"Em" e2 e edB |"D" d3 def |"Em" e2 e edB |"D" d3 d2 e | d2 B GAB | A2 F DEF | 
"G" G2 E"D" FED |"Em" E3 E3 :|  