Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:4/4
K:Edor
['B2 AF BFAF', 'eB B2'  
X:1
L:1/8
M:4/4
K:Edor
|: B2 AF BFAF | E3 F EDB,D | B2 AF BFAF | DFAF FE E2 | B2 AF BFAF | E3 F EDB,A, | B,E E2 B,EGB | 
 dBAF GE E2 :: eB B2 efge | fd d2 Adfd | eB B2 egfe | dBAF GE E2 | eB B2 egfe | fd d2 Adfd | 
 B3 d (3efg fe | dBAF GE E2 :|  