Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
M:4/4
K:F#min
['f2 ae fece', 'fgaf eAce', 'aBgB BBaf eAce BBbB aBgB fgaf']  
X:1
L:1/8
M:4/4
K:F#min
 f2 ae fece | f2 ae fece | f2 ae fece | fgaf eAce :|[K:Bmin] fBBA B3 e | fB B2 eAce | fBBA B3 e | 
 fgaf eAce | fBBB gBBB | aBBB bBBB | fBBA B2 ce | fgaf eAce |] BBbB aBgB | BBaf eAce | BBbB aBgB | 
 fgaf eAce :|  