Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/8
M:4/4
K:Bmin
['e2 de']  
X:1
L:1/8
M:4/4
K:Bmin
"Bm" fBBB fBaB | fBBB"A" e2 de |"Bm" fBBB"D" fgfe | dfaf"A" e2 de |"Bm" fBBB fBaB | fBBB"A" e2 de | 
"Bm" fBBB"D" fgfe |1 dfaf"A" e2 z B :|2"D" dfaf"A" e3 c |:"D" d2 de f2 fe | defd"A" edBc | 
"D" dcde fgfe | dfaf"A" e2 dB |"D" d2 de f2 fe | defd"A" edBc |"D" dcde fgfe |1 dfaf"A" e2 de :|2 
"D" dfaf"A" e3 z |]  