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:Gdor
['G,A,B,D GBAG', 'B2 dB']  
X:1
L:1/8
M:4/4
K:Gdor
 G,A,B,D GBAG | EFAF CFAF | G,A,B,D GABG | AFGA BGDB, | G,A,B,D GBAG | F2 AF cFAc | B3 G AGFG |1 
 AdcA BGDB, :|2 AdcA BGGA || B2 dB FBdB | B2 dB cAFA | B2 dB FBdB | FGAc BGGA | B2 dB FBdB | 
 B2 dB cAFA | B3 G AGFG | AdcA BGGA | B2 FB dBFB | B2 FB ABcA | B2 FB dBFB | ABcA BGGA | 
 B2 dB fBdB | Ac{d}cA dcAc | B3 G AGFG | AdcA BGDB, || G,4 ||  