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:Bb
['F2F2 F2F2', 'e>de>d e>ed>c d>cd>c d>dc>B B>AG>F F2GA']  
X:1
L:1/16
M:2/4
K:Bb
 DE | F2F2 F2F2 | B>c d>dc>B | c>Bc>B c>ed>c | B>cd>B F2DE | F2F2 F2F2 | B2>c2 d>dc>B | 
 c>Bc>B c>ed>c | B6 || (3!fermata!Bcd | e>de>d e>ed>c | d>cd>c d>dc>B | B>AG>F F2GA | B>Fd>B f2cd | 
 e>de>d e>ed>c | d>cd>c d>dc>B | B>AG>F F2GA | B2B2B2!D.C.! ||  