Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
Q:1/4=92
M:2/4
K:G
['B d2']  
X:1
L:1/8
Q:1/4=92
M:2/4
K:G
 d2 g2 | d3 c | B c d B | d2 g2 | d4 | B B A B | d2 c2 | c3/2 B/ c e | d4 | B B A B | d2 c2 | 
 c e d c | B3 z |]  