Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
Q:1/8=180
M:6/8
K:Bmin
['B2 c d2 e', 'a2 f']  
X:1
L:1/8
Q:1/8=180
M:6/8
K:Bmin
|: d2 B c2 A | B2 c d2 e | f2 f e2 d | c2 A ABc | dcB cBA | B2 c d2 e | f^ga gfe | f2 B B2 B/c/ :: 
 a2 f d2 e | f2 b b2 f | a2 f e2 d | c2 A ABc | dcB cBA | B2 c d2 e | f^ga gfe |1 f2 B B2 f :|2 
 f2 B B3 ||  