Develop a musical composition in line with the given structure and theme.
X:1
L:1/4
M:4/4
K:G
['d g2 f e d2 e f/g/', 'g g'  
X:1
L:1/4
M:4/4
K:G
 d | g2 f e | d2 e f/g/ | B B c A | G3 :| d | B G B d | g g e g | f d e ^c | d2 e f | g g f e | 
 d d e f/g/ | B B c A | G3 ||  