Construct a musical piece that integrates the provided motif and corresponds to the indicated musical structure.
X:1
L:1/4
Q:3/4=100
M:6/4
K:Gmix
['G B', 'c d'  
X:1
L:1/4
Q:3/4=100
M:6/4
K:Gmix
 G B | B d B G B G | B d B e d c | B G B A F A | B2 A G B G | B d B G B G | B d B e d c | 
[M:9/4] B G B A3 e3 |[M:6/4] A B c d e f/e/ | e d c B G B |[M:9/4] A F A G3 d3 | 
[M:6/4] A B c d e f/e/ | e/d/ c d g (f g/4a/4) f | g3- g :: z | g2 d B c d | g2 d B c d | 
 e d c B G B | A F A TB2 A | g2 d B c d | g2 d B c d | e d c B G B | A3 e3 | A B c d e f/e/ | 
 e d c B G B |[M:9/4] A F A G3 d3 |[M:6/4] A B c d e/4f/4e/ e | d c d g (f/g/4a/4) f | g3- g :|  