Compose a piece of music using the provided motif and follow the designated alphabet character structure.
X:1
L:1/16
M:2/4
K:Bb
['fgfe dedc']  
X:1
L:1/16
M:2/4
K:Bb
{fga}"Bb" b2f2"F" fgfe |"Bb" d2d2"F" dedc |"Bb" B2cd"F" efga |"Bb" b2f2"F" f2f2 | 
{fga}"Bb" b2f2"F" fgfe |"Bb" d2d2"F" dedc |"Bb" B2d2"F" fedc |"Bb" B4 z4 :|[K:F]"F" F2GA"C" Bcde | 
"F" f2fa"C" g2ga |"F" f2fa"C" g2ga |"F" g2f2"F7" f4 |:[K:Bb]{fga}"Bb" b2f2"F" fgfe | 
"Bb" d2d2"F" dedc |"Bb" B2d2"F" fedc |"Bb" B4 z4 :|"Bb" d6 f2 |"Cm" f2{gf}e2 e4 |"F7" c6 e2 | 
"Bb" e2{fe}d2 d4 | B6 d2 |"Cm" d2{ed}c2 c4 |"F7" f2>f2 fedc |"Bb" B4 z4 |]  