Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/16
M:2/4
K:A
['A>GA>B c>de>c', 'g>fg>e f>^ef>^d e>de>c d>cd>B c>^Bc>A .E2 |{B}']  
X:1
L:1/16
M:2/4
K:A
 E2 |{B} A>GA>B c>de>c | d>cd3/2e f>ga>f | e>a(g>a) e>cA>c | B2"^?"e2"^?"e2 E2 | A>GA>B c>de>c | 
 d>cd>e f>ga>f | e>(ag>)f e>cd>B |{B} c2"^?"A2"^?"A2 :: e2 | a>ga>f g>fg>e | f>^ef>^d e>de>c | 
 d>cd>B c>^Bc>A | B2"^?"e2"^?"e2 .E2 |{B} A>GA>B c>de>c | d>cd>e f>ga>f | e3/2(ag>)f (3efe (3dcB | 
{B} c2"^?"A2"^?"A2 z2 ||  