Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
M:2/4
K:G
['G B/d/ ed', 'g a/g/ ed']  
X:1
L:1/8
M:2/4
K:G
|: G B/d/ ed | gd ed | G B/d/ ed | BA A2 | G B/d/ ed | gd ed | B/c/d ef | ag g2 :: g a/g/ ed | 
 Bd d2 | g a/g/ ed | ea a2 | g a/g/ ed | Bd d2 | B/c/d ef | ag g2 :|  