Compose music pieces conforming to the prescribed pattern and incorporating the provided musical concept.
X:1
L:1/8
M:2/4
K:D
['FA/F/ ED DF/A/ BA dA dA', 'D2 d>c de dc BA d>c dB'  
X:1
L:1/8
M:2/4
K:D
|: FA/F/ ED | DF/A/ BA | dA dA | FE E2 | FA/F/ ED | DF/A/ BA | dA dA | FD D2 :: d>c de | dc BA | 
 d>c dB | AF E2 | FA/F/ E(D | D)F/A/ BA | dA dA | FE D2 :|  