Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/16
M:11/16
K:Bb
['dedc d2c d2de f2fg f2=e f4 g2a2', 'f4- f3- f4', 'c2B2 f2ef e2d c2B2 cdcB AGA']  
X:1
L:1/16
M:11/16
K:Bb
 dedc d2c d2de | f2fg f2=e f4 | g2a2 b2_a g2gf | gfed d3- d4 :: fggf g2f edc2 | d2c2{BA} B3 c4 | 
 defe d2c B2c2 |1 deed d3- d4 :|2 dccB B3- B4 ||[K:Ab]"^B"{=e} f4- f3- f4 |{=e} f4- f3- f4 |: 
"^C" f2ef e2d c2B2 | f2ef e2d c2B2 | f2ef e2d c2B2 | cdcB AGA B4 :|  