Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:4/4
K:Bmin
['f/g/a d>a', "a>f c'/b/a/g/ b>a f/g/a =d>ef>e d/c/B/A/ E2"]  
X:1
L:1/8
M:4/4
K:Bmin
 A/G/ |"D" F<A AB/c/ d>ed>c |"Bm" B>ABc/d/"Em" e/f/g/f/ e>E |"D" F<A AB/c/ d>ef>e | 
 d/c/B/A/ d>F"A" E2 D :| a |"D" f/g/a d>a b/a/g/f/ a>f |"Em" b>beb"G" c'/b/a/g/ b>a | 
"D" f/g/a d>a b/a/g/f/ a>d | A>df>d"A" e2 d>a |"D" f/g/a d>a b/a/g/f/ a>f | 
"Em" g>be>b"G" c'/b/a/g/ b>a |"A" f/g/a e>f"D" =d>ef>e | d/c/B/A/ d>F"Em" E2 D ||  