Develop musical pieces that incorporate the given motif and follow the specified structure.
X:1
L:1/4
M:4/4
K:G
['G F', 'e B'  
X:1
L:1/4
M:4/4
K:G
 D | G3/2 A/ G F | E2 D3/2 z/4 d/4 | d3/2 B/ e/d/ c/ A/ | B3/2 G/ E F | G F G A | B G e d | 
 C B G A | G2 z || d | e B e f | g2 d g | f g/f/ e/d/ e/f/ | e3/2 e/ B d | e B e f | G2 d g | 
 f g/f/ e/d/ e/f/ | e3 z/ (3G/B/d/ | e B e/g/ f/a/ | g2 d g/f/ | e d c B | B3/2 G/ E F | 
 G3/2 F/ G A | B G e d | c B G A | G3 ||  