Develop a song that integrates the given musical theme as a fundamental aspect.
'Sectional: Through Composed'  
X:1
L:1/16
M:2/4
K:C
|:"^A""C" eag2 cfe2 |"Dm" e2d2{/e} d^cd2 |"G7" fba2 fgf2 |"C" f2e2{/f} e^de2 | gd'c'2{/f} e^de2 | 
"Dm" dba2{/e} d^cd2 |"G7" Bgf2 Ged2 |"C" c2c2 c2 z2 :|"^B""Am" ee^de =dcBA |"E7" ^GABG"Am" A2E2 | 
"Dm" f2d2"Am" e2c2 |"E7" B2e2"Am" A4 | ee^de =dcBA |"E7" ^GABG"Am" A2E2 |"Dm" F2F2 edBA | 
"E7" ^GEFE"_>Teil A""Am" A4 |:[K:F]"^C""F" caeg fAed |"C7" d2E2 eee2 | d2E2 eee2 |"F" d2F2 ccc2 | 
 cdef efgf |"Bb" e2d2 e2d2 |{/=B}"C7" c2e2{/A} d2e2 |"F" f2f2 f2"_Fine" z2 :: 
[K:C]"^D""C" gef^f ge'd'c' |"G7" c'bbd a4 | aggB f4 |"C" feeG cef^f | gef^f ge'd'c' | 
"F" baaf a2>d'2 |"C" c'eag"G7" adfB |"C" c4"_>Teil C" z4 :|  