Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/8
M:4/4
K:Bmin
['B2 f2 f2 ef g2 e2 edcd', 'B2 B2']  
X:1
L:1/8
M:4/4
K:Bmin
 B2 f2 f2 ef | g2 e2 edcd | eAce efed | c2 c2 dcBA | B2 f2 f2 ef | g2 e2 edcd | eAce efed | 
 c2 B2 BAFA :| B3 A Bcdc | B2 B2 c3 d | eAce efed | c2 c2 dcBA | B3 A Bcdc | B2 B2 c3 d | 
 eAce efed | c2 B2 B2 A2 :|  