Assemble a piece of music by merging the alphabetic representation of the predetermined musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/4
K:G
['A>B cd ed ea ge de/d/', 'A g a2 ge dB gf/g/ aA']  
X:1
L:1/8
M:2/4
K:G
 E | A>B cd | ed ea | ge de/d/ | cA GE | A>B cd | ed ea | ge de/d/ | cA A :| g | a2 ge | dB gf/g/ | 
 aA AB/^c/ | dB GE | A>B cd | e/f/e/d/ ea | ge de/d/ | cA A :|  