Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
Q:1/8=180
M:4/4
K:G
['BG d2 BG', 'EGG z gfed e2 dB gfed ea'  
X:1
L:1/8
Q:1/8=180
M:4/4
K:G
 D | G2 BG d2 BG | d2 BG FA A2 | G2 BG d2 BG | cABG EGG :| z | gfed e2 dB | gfed ea a2 | 
 gfed egdB | cABG EGG :|  