Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:4/4
K:G
['DE GA/B/', 'B2 dB']  
X:1
L:1/8
M:4/4
K:G
 GE | DE GA/B/ c2 cA | B2 BG AFGF | DE GA/B/ cdeB | dBAB GG/G/ GE | DE GA/B/ c2 ec | B2 dB AEGE | 
 DEGA BdeB | dBAB G2 G2 || B2 dB c2 ec | B2 dB AG E2 | BcdB cdeB | dBAB GG/G/ G2 | B2 dB c2 ec | 
 B2 dB AG E2 | Bdef g2 ge | dcBA G2 ||  