Compose a piece of music using the provided motif and follow the designated alphabet character structure.
X:1
L:1/8
Q:1/4=120
M:6/8
K:Bb
['A2 B']  
X:1
L:1/8
Q:1/4=120
M:6/8
K:Bb
"^Brightly." F"A" |"Bb" B>AB"F" c>de |"Bb" d B2- B2 d/e/ |"Bb" f>gf"F" A2 B |"Cm" c3-"F" c2 F | 
"Bb" B>AB"F" f>gf |"Gm" gab"F" a>gf |"C" (gc)"F"f"Bb" f2"C" =e |"F" f3- f2 :: f"B" | 
"F" f>gf"Cm" g2 a |"Gm" b d2- d2 d |"Cm" e>fe"Gm" dec |"Eb" g3-"F" g2 f | 
"Eb" ef"Bb"d"F" (cd)"Gm"B |"C" (AB)"C7"G"Dm" F2 a |"Gm" g/a/bG"F7" A2 B |"Bb" B3- B2 :|  