Create musical pieces following the given structure and incorporating the suggested musical concept.
X:1
L:1/8
M:2/4
K:G
['d/e/ =fe de/^f/ gd dd/e/ =fe/d/ gB/A/']  
X:1
L:1/8
M:2/4
K:G
 D/E/ | G>ABd | c=f ed/B/ | GB/A/ GG | G3 d/e/ | =fe de/^f/ | gd dd/e/ | =fe/d/ gB/A/ | B3 d/e/ | 
 =fe de/^f/ | gd dd/e/ | =fe/d/ gB/A/ | B3 D/E/ | GA Bd/B/ | c=f ed/B/ | GB/A/ GG | G3 ||  