Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/8
M:2/4
K:Bb
['f/g/f/d/ c2']  
X:1
L:1/8
M:2/4
K:Bb
 c2 f2 | f/g/f/d/ c2 | c2 f2 | f/g/f/d/ c2 | c>dcb | gcag | fgfc | f4 | b>agb | b>agb | czf z | 
 f/g/f/d/ c2 | cdcb | gcag | fgfc | f4 |]  