Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:4/4
K:Bmin
['BFFF BFcF FFcF dFFF B^A c f2']  
X:1
L:1/8
M:4/4
K:Bmin
 bfff gfed | efff gfeg | fb c' d'2 c' c'b | b^aag gfef | bfff gfed | efff gfeg | f^e =e c2 ^A cg | 
 edc^A B2 fa | bfff gfed | efff gfeg | fb c' d'2 c' c'b | b^aag gfef | bfff gfed | efff gfeg | 
 f^e =e c2 ^A cg | edc^A B2 F^A | BFFF BFcF | FFcF dFFF | B^A c f2 efg | f^eed dcc^A | BFFF BFcF | 
 FFcF dFFF | B^A c f2 efg | edc^A B2 F^A | BFFF BFcF | FFcF dFFF | B^A c f2 efg | f^eed dcc^A | 
 BFFF BFcF | FFcF dFFF | B^A c f2 efg | edc^A B4 |]  