Compose music pieces conforming to the prescribed pattern and incorporating the provided musical concept.
X:1
L:1/8
Q:1/4=120
M:2/4
K:D
['d f2 e d a2 g f', 'A2 f/e/d/e/ f/e/d/c/ Bg g2 e/d/c/d/ e/d/c/B/'  
X:1
L:1/8
Q:1/4=120
M:2/4
K:D
 d f2 e | d a2 g | f A2 G | F2 E2 | Dd"^tr"FE | Dd"^tr"FE | (D/E/F) (F/G/A) | B2 A2 :: 
 f/e/d/e/ f/e/d/c/ | Bg g2 | e/d/c/d/ e/d/c/B/ | Af f2 | GecA | Fd/c/ B/A/G/F/ | Eg Ad | d2 D2 :|  