Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/8
M:4/4
K:G
['g2 dg Bgdg']  
X:1
L:1/8
M:4/4
K:G
 c | BGBd g2 (dc) | BGDG FAAc | BGBd gdec | dBcA BGGc | BGBd g2 (dc) | BGDG FAAF | GBAc Bdce | 
 dBcA BGGf | g2 dg Bgdg | Bgdg ABcA | g2 dg Bgdg | ABcA BGGf | g2 dg Bgdg | Bgdg ABcA | BGcA dgfe | 
 dBcA BG G2 ||  