Craft a musical work based on the specified structure and given theme.
X:1
L:1/4
Q:1/2=144
M:4/4
K:G
['d3/2 c/ B A G A B', 'e g f/g/ a'  
X:1
L:1/4
Q:1/2=144
M:4/4
K:G
 d3/2 c/ B A | G A B A/G/ | E A2 B | c2 g2 | d3/2 c/ B A | G A B (f/g/) | a f g (e/c/) | A2 c2 :| 
 e g f/g/ a | e d/c/ d B | e g f/g/ a | e2 a2 | e g f/g/ a | e d/c/ d e | c3/2 B/ A B | c2 g2 :|  