Develop a song that integrates the given musical theme as a fundamental aspect.
'Sectional: Through Composed'  
X:1
L:1/8
M:6/8
K:D
 A | def efd | cdB A2 A | Bcd A2 d | dec d2 :: F | FEF G2 G | GFG A2 A | ABc dcB | AGF E2 F | 
 FEF G2 G | GFG A2 A | Bcd A2 d | dec d2 ::[M:2/4][K:F] fa/g/ fc | A/c/f/a/ g/b/g/e/ | fa/g/ fc | 
 g/b/g/e/ f2 :: c/A/c/A/ d/B/d/B/ | A/G/F/E/ F/A/c/A/ | c/A/c/A/ d/B/d/B/ | A/G/F/E/ F2 :|  