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:D
['DEFA B2', 'BFFE B2']  
X:1
L:1/8
M:4/4
K:D
"Bm" b3 a ab f2 | f2 ea feef | afed fdBc | (3dcd ef"A" edcA |"G" B2 cF"D/F#" ABBA | 
"G" B2 fB e2 dc | decd BFFE |1"A" DEFA B2 fa :|2"A" DEFA B2 de |:"Bm" f2 Bd fg g2 | fdBA B3 c | 
"D" (3dcd dc defa |1"A" eA A2 cdec |"Em9" BFBc dBdf | ecBA B3 c |"G" decd BFFE | 
"A" DEFA"Bm" B2 de :|2"A" eA (3Bcd efaf |"D/E" baab ffaf | feed efBc |"G" decd BFFE | 
"A" DEFA"Bm" B2 fa ||  