Compose music pieces conforming to the prescribed pattern and incorporating the provided musical concept.
X:1
L:1/8
M:2/2
K:Bb
['Bbfd BfdB B2 FE DFBc dcBd'  
X:1
L:1/8
M:2/2
K:Bb
 BA |"Bb" Bbfd BfdB |"F" FdcA"Bb" B2 FE | DFBc dcBd |"F" cf"C7"=eg"F" f2 dc |"Bb" Bbfd BfdB | 
"F" FdcA"Bb" B2 FE | DFBc dcBd |"F" cBAc"Bb" B2!fine! ::[K:F] cB |"F" AFAc dcde | fefg afcA | 
"C7" BABc"F" dcBA |"C" Gc"G7"=Bd"C" c2 c_B |"F" AFAc dcde | fefg afcA |"C7" bgec =Bcde | 
"F" f2 a2 f2!D.C.! :|  