Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
M:2/4
K:G
['e>f gg/g/ ag fe d/c/B/A/ GG/A/ Bc'  
X:1
L:1/8
M:2/4
K:G
|:"G" BB/B/ Bc |"D7" d2"G" B2 | dd/d/"D7" ef |"G" g2 d2 |"Em" gg/g/ fg |"A" a2 e>f |"A7" gg/g/ ag | 
"D" fe d/c/B/A/ |"G" GG/A/ Bc |"D7" d2 A>B |"Am" cc/A/"D7" FA/F/ |"G" G2- G2 ::"D" aa/a/ aa | 
"Em" b2 e>f |"A7" gg/g/ ag |"D" fe d/c/B/A/ |"G" GG/A/ Bc |"D7" d2 A>B |"Am" cc/A/"D7" FA/F/ | 
"G" G2- G2 :|  