Construct a musical composition utilizing the provided motif and conforming to the specified structure.
X:1
L:1/8
M:2/4
K:F
['B/d/d c/f/f aa a/g/g', "d3 g/f/ ee ec'/b/ aa"  
X:1
L:1/8
M:2/4
K:F
"^A""F" A/c/c"C7" B/d/d |"F" c/f/f aa |"C7" a/g/g cc |"F" g/f/f AA | A/c/c"C7" B/d/d | 
"F" c/f/f aa |"C7" a/g/g ce |"F" ff f z :|[K:C]"^B""C" ce/f/ gc |"G7" ed d/c/d | df/g/ aB | 
"C" fe e/d/e | ce/f/ gc |"G7" ed d/^c/d | da/g/ fe/d/ |"C" ce"_> Teil A" c z |: 
[K:Bb]"^C""Bb" fd g>f |"F7" f2 e2 | ec f>e |"Bb" e2 d2 | fd b>a |"Eb" ag fe |"Bb" d>f"F7" c>f | 
"Bb" B2 .b2 ::"^D""Bb" d3 g/f/ |"F7" ee ec'/b/ | aa ga |"Bb" bb ff | d3 g/f/ |"F7" ee ec'/b/ | 
 aa g>a |"Bb" bb b z :|  