Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
Q:3/8=120
M:6/8
K:F
['AFc c>BA', 'f2 e/f/ gec cdc afc c>dc bag']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:F
 F/G/ | AFc c>BA | BGd{e} dcB | AFc c>BA | BGG G2 F/G/ | AFc c>BA | BGd{e} dcB | Acf gae | 
 .f.f.f f2 :| e/f/ | gec cdc | afc c>dc | bag agf | efg c2 c | dBd dfb | cAc cfa | .b.a.g .a.g.f | 
 cfe f2 :|  