Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
M:2/2
K:Bmin
['B2 Ba ecac A2', 'FBDB FBdB'  
X:1
L:1/8
M:2/2
K:Bmin
 a | feac B2 Ba | ecac A2 Aa | feac Bcde | fedc dBBa | f>eac B2 Ba | ecac A2 Ac | BcdB cdea | 
 f2 ec dB B2 || FBDB FBdB | ^GAEA CEA,C | FBDB FBdB | ecfc dB B2 | FBDB FBdB | ^GAEA CEA,E | 
 FBdB Acea | f2 ec dBB ||  