Compose music pieces conforming to the prescribed pattern and incorporating the provided musical concept.
X:1
L:1/8
M:4/4
K:Bb
['b2 fd g2 ec', 'DFBF EGBG FAce dfdB DFBd EGce'  
X:1
L:1/8
M:4/4
K:Bb
 f | b2 fd g2 ec | f2 dB AcAF | b2 fd g2 ec | dfAc dBB :| F | DFBF EGBG | FAce dfdB | DFBd EGce | 
 dfec d(BBF) | DFBF EGBG | FAce dfdB | DFBd EGce | dBcA BB,B, ||  