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:2/4
K:G
['GB Bc/B/', 'G2 Bddg dgdc Bd df/g/ aAAc Bddg']  
X:1
L:1/8
M:2/4
K:G
 GB Bc/B/ | BdBG | GB Bc/B/ | Bdgd | GB Bc/B/ | BdBG | ecBA | G2 G2 :: Bddg | dgdc | Bd df/g/ | 
 aAAc | Bddg | dgdB | ecBA | G2 G2 :|  