Compose music pieces conforming to the prescribed pattern and incorporating the provided musical concept.
X:1
L:1/8
M:2/4
K:G
['BG GA Bc/B/ GA/B/ cA AB cd/c/', 'G>A Bg gf ed cc/B/ Aa a>g'  
X:1
L:1/8
M:2/4
K:G
|: BG GA | Bc/B/ GA/B/ | cA AB | cd/c/ BA | Bg ge | de/d/ BB/c/ | dd cB/A/ | G2 G>A :: Bg gf | 
 ed cc/B/ | Aa a>g | fd ef | g>a ge | de/d/ BB/c/ | dd cB/A/ | G2 G>A :|  