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=90
M:6/8
K:F
['B A2']  
X:1
L:1/8
Q:1/4=90
M:6/8
K:F
 A | A2 B c2 d | c2 B A2 G | (AG) F G2 A | (A3 A2) A | A2 B c2 d | c2 B A2 A | (AG) F G2 ^G | 
 (A3 A2) A | A2 A (AG) A | B2 B A2 A | c2 c B2 A | (G3 G2)"^Chorus" F | A2 B c2 d | c2 c F2 B | 
 A2 A (GA) G | (F3 F2) |]  