Design a music composition that employs the provided motif and follows the predetermined musical form.
X:1
L:1/8
M:2/4
K:Bb
['DFDF B2']  
X:1
L:1/8
M:2/4
K:Bb
 F | BBBB | B>G F2 | G2 GG | F>EDF | DFDF | B2 dd | dcdc | B2 z f | c>BAB | c2 z f | c>BAG | 
 F>GFE | DFDF | B2 BB | cccc | d>cBB | ddec | B2 z |]  