Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/16
M:2/4
K:Bb
['Bdfa bfgf edcB AcFE DFBd', 'DFBF dFBF']  
X:1
L:1/16
M:2/4
K:Bb
 F2 | Bdfa bfgf | edcB AcFE | DFBd ABcd | ecdB AcF2 | Bdfa bfgf | edcB AcFE | DFBd EFAc | 
 ecAc B2 :: FE | DFBF dFBF | DFBF dFBF | EGBG eGBG | EGBG eGBG | DFBF dFBF | DFBF dFBF | 
 fAce AceA | ceAc B2 :|  