Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/16
Q:1/4=120
M:3/4
K:F
['BA GF F2D2C2 C>DF2F2', '(GA) F2D2C2']  
X:1
L:1/16
Q:1/4=120
M:3/4
K:F
 C2 | C>DF2F2 | F4 F F | G>A BA GF | F2D2C2 | C>DF2F2 | A>B c2F2 |"^tr" G2>F2 GA | F4 GA | 
 B2cB AG | (A2BA) GF | GA BA GF | F2D2C2 | C>DF2F2 | A>Bc2f2 |"^tr" G2>F2 GA | F4 || cd | 
 _e3 f (ef) |{_e} d4 c2 | c2c2f>g | f2d2c2 |"^tr" (_e>d) (eg) fe | _e2d2 (c/d/f) | 
 (B>d) (cA) (GA) | F2D2C2 |"^tr" (_e>d) (ef) (ef) | (dcAc) (df) | (cd) (Ac) (GA) | F2D2C2 | 
 C>DF2F2 | (A>B)c2(de/f/) |{A}"^tr" G3 F (GA) | F4 |]  