Construct a musical work following the provided guidelines and thematic elements.
X:1
L:1/4
M:4/4
K:G
['B G', 'd B'  
X:1
L:1/4
M:4/4
K:G
|: D | B3/2 c/ A3/2 B/ | G d B G | c A B G | E A/G/ F D | B3/2 c/ A3/2 B/ | G d B G | c A D F | 
 G3 :| d | c/B/A/G/ g3/2 d/ | e g d B | c3/2 d/ B G | E A/G/ F D | c/B/A/G/ g3/2 d/ | e g d B | 
 c3/2 e/ d F | G3 d | c/B/A/G/ g3/2 d/ | e g d B | c3/2 d/ B G | E A/G/ F D | B3/2 c/ A3/2 B/ | 
 G d B G | c A D F | G4 ||  