Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:6/8
K:G
['Bcd ded dcB ABc dBG', 'G,B,D G,B,D [CE]3']  
X:1
L:1/8
M:6/8
K:G
 Bcd ded | dcB ABc | dBG F2 G | A3 D3 | Bcd ded | dcB ABc | dBG E2 F | G3 G,2 :: G,B,D G,B,D | 
 [CE]3 [CE]3 | DFA DFA | [GB]3 [GB]3 | G,B,D G,B,D | [CE]3 [CE]2 B, | A,cB AGF | G3 G,3 :|  