Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/4
K:F
['fa f z', 'g/g/g b/b/b bd d/e/f gc']  
X:1
L:1/8
M:2/4
K:F
"^A""F" c/d/c/=B/ cf |"C7" fe gg | c/d/c/=B/ cg |"F" gf aa |"Bb" bb d>b |"F" aa c>a | 
"C7" ge f/e/d/e/ |"F" fa f z ::"^B""C7" bb g>a | gg e>g |"G7" ff =B/c/d |"C" e/d/e/f/ gg/a/ | 
"C7" bb e>b |"F" aa f>a |"C7" gg B/c/d/e/ |"F" fa f z ::[K:Bb]"^C""Bb" dF/B/ df | =ef b2 | 
"Cm" gc/d/ eg | ^fg c'2 |"F7" ea a>a | ac c/d/c |1"Bb" db b>b | bf f/g/f :|2"Bb" df"F" =B/c/f | 
"Bb" Bb b z"^D" |:"Eb" g/g/g b/b/b |"Bb" bd d/e/f |"F7" gc c/d/e |"Bb" fB B/c/d |"Eb" g/g/g b/b/b | 
"Bb" bd d/e/f |"F7" gc e/d/c |"Bb" Bb"_> Teil A,B" b z :|  