Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:4/4
K:Bmin
['Bf f2 gefd', 'BFBd cefe', 'GBdB cede f2 fe dcBA GBdB ceag']  
X:1
L:1/8
M:4/4
K:Bmin
 Bf f2 gefd | efed cdec | Bf f2 gefd | edcd edcA | Bf f2 gefd | e2 ed cdec | Bf f2 gefd | 
 edcd edcA || BFBd cefe | d2 df edcA | BFBd cefe | dfed cA A2 | BFBd cefe | d2 df edcA | 
 BFBd cefe | dBcA B2 BA || GBdB cede | f2 fe dcBA | GBdB ceag | fdec d2 dF | GBdB cede | 
 f2 fe dcBA | GBdB ceag | fdec dBcA ||  