Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:4/4
K:G
['ecAG FdcA G2 eG F2 dF', 'BG FAdA fdAF GBdB gdBG Acef gece']  
X:1
L:1/8
M:4/4
K:G
|: DF | GdBd gbfa | ecAG FdcA | G2 eG F2 dF | Ggba g2 fd | GdBd g2 fa | ecAG FdcA | G2 eG F2 dF | 
 GdcA G2 ::[K:D] BG | FAdA fdAF | GBdB gdBG | Acef gece | dcfB ABGE | FAfA FdfA | GBgB GdgB | 
 cBcb a2 ge |1 d2 c2 d2 :|2 d2 A2 D2 ||  