Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/4
M:4/4
K:G
['d g']  
X:1
L:1/4
M:4/4
K:G
|: f d B d e/f/g/f/ | |3 Mg/f/ e/d/ f | ||9 Md g f d g B d e/f/ g | ||3 Mf d B d e/f/g/f/ | ||3 
 Mg/f/ e/d/ B | c3/2 d/ c | ||3 Mg/f/e/d/ c e e g :: |9 MG3/2 A/B/c/ d g f d g B | 
 d g f d g B d e/f/ g | G3/2 A/B/c/ d g f d g B | ||3 Mc3/2 d/ c | ||3 Mg/f/e/d/ c e e g :: 
 f f d d B/c/ d | |3 Md B/c/ d | g B/c/ d | ||3 Md B/c/ d f d g | f f d d B/c/ d | ||3 Mg d B | 
 c3/2 d/ c | ||3 Mg/f/e/d/ c e e g :|  