Compose music pieces conforming to the prescribed pattern and incorporating the provided musical concept.
X:1
L:1/8
M:2/4
K:none
['c/B/A c/B/A', 'f2 e/d/c/B/ A2 FA/d/ ce AB/c/ df'  
X:1
L:1/8
M:2/4
K:none
[K:D] c/B/A c/B/A | ad f2 | c/B/A c/B/A | ac g2 | c/B/A c/B/A | ac g2 | cB AB/c/ | df d z :: 
 f2 e/d/c/B/ | A2 FA/d/ | ce AB/c/ | df d2 | f2 e/d/c/B/ | A2 FA/d/ | ce AB/c/ | df d z :|  