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
['GD GA Be eg/e/ dB', 'gf ed ef g>e dB']  
X:1
L:1/8
M:2/4
K:G
 B/A/ | GD GA | Be eg/e/ | dB B/A/G/A/ | BA AB/A/ | GD GA | Be eg/e/ | dB AB/A/ | G3 :| e/f/ | 
 gf ed | ef g>e | dB B/A/G/A/ |1 BA Ae/f/ | gf ed | ef g>e | dB AB/A/ | G3 :|2 BA AB/A/ | GD GA | 
 Be eg/e/ | dB AB/A/ | G3 ||  