Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:12/8
K:F
['cAF (TFEF) CFA cAF', 'e (Tfef) gec Bdf cAF', 'F2 e (Tfef) gec Bdf cAF BdB']  
X:1
L:1/8
M:12/8
K:F
 B | cAF (TFEF) CFA cAF | BdB AcA dBA GBd | cAF (TFEF) CFA cAF | BAB Gge fFF F2 :| e | 
 (Tfef) gec Bdf cAF | BdB AcA dBG G2 e | (Tfef) gec Bdf cAF | BAB GcB AFF F2 || e | 
 (Tfef) gec Bdf cAF | BdB AcA dBG G2 e | faf gbg afd cBA | BAB Gge fFF F2 |]  