Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:4/4
K:G
['G,>B, D>G B>A F>A', 'B d>e d>c', 'd>G B>d'  
X:1
L:1/8
M:4/4
K:G
 G,>B, D>G B>A F>A | G>G, B,>D G>B d>B | c>e A>c B>d G>d | (3A^AB c>A (3FED (3CB,A, | 
 G,>B, D>G B>A F>A | G>B d>g b>g f>=f | e>A c>e d>G B>d |1 A>D F>A G4 :| A>D F>A G3 B |: 
 d>e d>c B>d e>f | g>a (3gfe d>B g>e | d>G B>d A>D F>A | G>E c>G e>c g>e | d>G B>d A>D B>G | 
 d>B g>d b>g f>=f | e>G c>e d>G B>d |1 A>D F>A G3 B :|  