Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/8
M:4/4
K:Bmin
['B3 B BFBc', 'd2 A2 BA FAdf |1 d4 d2']  
X:1
L:1/8
M:4/4
K:Bmin
|:"Bm" B3 B BFBc | dB/c/de f2 d2 | B3 B BFBc |"F#m" dedc"Bm" B2 F2 |"Bm" B3 B BFBc | 
 dB/c/de f2 d2 | B3 B BFBc |1"F#m" dedc"Bm" B2 F2 :|2"F#m" dedc"Bm" B4 |:[K:D]"D" A2 BA F2 AB/c/ | 
 dB/c/de f2 d2 | A2 BA FAdf | dAFD"A" E3 B |"D" A2 BA F2 AB/c/ | dB/c/de f2 d2 | A2 BA FAdf |1 
"A" eABc"D" d4 :|2"A" eABc"D" d2 c2 ||  