Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:2/4
K:D
['f/e/ fd d/e/f/g/ aeef d(c/d/)', 'd3 f>edc BecA a>gfb a>gfb a/b/a/g/ fb']  
X:1
L:1/8
M:2/4
K:D
 f/e/ | fd d/e/f/g/ | aeef | d(c/d/) (e/d/).c/.B/ | A3 f/e/ | fd d/e/f/g/ | aeef | 
 d(c/d/) f/e/d/c/ | d3 :: f>edc | BecA | a>gfb | a>gfb | a/b/a/g/ fb | a/b/a/f/ a2 | A>c e/g/f/e/ | 
 fdd :|  