Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
M:4/4
K:G
['G3 A Bd d2 gabg aged egdg', 'BGGd egdg egdg'  
X:1
L:1/8
M:4/4
K:G
 G3 A Bd d2 | gabg aged | egdg egdg | egdG BAAB | G3 A Bd d2 | gabg aged | egdg egdg |1 
 bgag eg g2 :|2 bgag egge |: d3 e dB B2 | cBAc BGGd | egdg egdg | egdG BAAB | d3 e dB B2 | 
 cBAc BGGd | egdg egdg |1 bgag egge :|2 bgag eg g2 ||  