Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/8
Q:1/4=100
M:6/8
K:F
['AcA cAc', 'AFA fga', 'd2 f efg a2', 'B2 B/c/ GAB Eed cde c2 a']  
X:1
L:1/8
Q:1/4=100
M:6/8
K:F
 c | AcA cAc | BdB dBd | AcA cAc | fgf f2 c | AcA cAc | BcB d2 e | fed cBA | GAG G2 || c | 
 AFA fga | AFA f2 a | AFA fga | G2 G G2 c | AFA fga | gfe fed | cfd cAf | F2 F F2 || 
[M:6/8][K:A][Q:1/4=100] e | c2 e d2 f | efg a2 c | dcB cde | BGE E2 G | ABc d2 f | efg a2 f | 
 ega edc | B3 B2 :: B/c/ | GAB Eed | cde c2 a | gab ef=g | f3 f2 (f/g/) | aec dbg | af^d ebg | 
 afd cdB | A3 A2"^Rpt added" :|  