Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/4
Q:1/4=140
M:4/4
K:G
['d B']  
X:1
L:1/4
Q:1/4=140
M:4/4
K:G
 F | G G (G F) G | A A/ A/ e2 d | B G B2 G | E D z z D | G G (G F) G | A A e2 d | B G B2 G | 
 E D z z B/c/ | d d (B c) d | e e (d B) B | c c (B A) G | d B A2 D | G A (B A) G | c d e2 d | 
 B G c2 B | A G z z ||  