Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:4/4
K:C
['d>AF>A D2 F>A d>fe>c', 'd>(g{a} (3gfg) b>(g{a} (3gfg) d>gb>g']  
X:1
L:1/8
M:4/4
K:C
[M:2/2][K:D] .abc (Tfe) | d>AF>A D2 F>A | d>fe>c d>cB>c | A2 c>e A2 c>e | (3fga e>f d>cB>A | 
 d>AF>A D2 F>A | d>fe>c d>cB>A | (Tg>f)g>b a>fd>f | e>AB>c d2 :: z2 | 
 d>(g{a} (3gfg) b>(g{a} (3gfg) | d>gb>g a>gf>g | A2 c>e A2 c>e | (3(fga) e>f d>cB>A | 
 d>(g{a} (3gfg) b>(g{a} (3gfg) | d>gb>g a>gf>a | g>fg>b a>fd>f | e>AB>c d2 :|  