Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:2/4
K:F
['c(c/B/) Ac B(B/A/) Gd c(c/B/) Af (e/f/).g/.e/', 'AG .E/.G/.c/.e/ g2 ad/e/ fd c/B/A/B/ c', 'gf e>f gf', 'd2 cAcf f/e/d/e/ f']  
X:1
L:1/8
M:2/4
K:F
 c(c/B/) Ac | B(B/A/) Gd | c(c/B/) Af | (e/f/).g/.e/ f z | c(c/B/) Ac | B(B/A/) Gd | c(c/B/) Af | 
 (e/f/).g/.e/ f z ::[K:C] G2 AG | .E/.G/.c/.e/ g2 | ad/e/ fd | c/B/A/B/ c z | G2 AG | 
 .E/.G/.c/.e/ g2 | ad/e/ fd | c/B/A/B/ c z ::[K:F] A2 cf | a2 gf | e>f gf | .e/.c/.d/.e/ f z | 
 A2 cf | a2 gf | e>f gf | e/c/d/e/ f z :: dd/d/ dd/d/ | dd/d/ d2 | cAcf | f/e/d/e/ f z | 
 dd/d/ dd/d/ | dd/d/ d2 | cAcf | f/e/d/e/ f z :|  