Develop a musical work that employs the provided motif and observes the stated musical form.
X:1
L:1/8
M:4/4
K:Bmin
['', '(3BAB BdcB ABAF ABde fB (3BAB BcdB', 'defg abaf'  
X:1
L:1/8
M:4/4
K:Bmin
 fe |: dB (3BAB BdcB | ABAF ABde | fB (3BAB BcdB | ABde fefa | b2 B (3BAB BdcB | ABAF ABde | 
 fB (3BAB BcdB | ABde f2 fe :: defg abaf | defg a2 af | defg abaf | edef (3gfe af | defg abaf | 
 defg a2 gf | gfga (3bag (3agf | edef g2 fe :|  