Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:4/4
K:Gmin
['DG G2 AF F2', 'Ac c2']  
X:1
L:1/8
M:4/4
K:Gmin
|: DG G2 AF F2 | AFcF dFcF | DG G2 AF F2 | AFcA BGGF | DG G2 AF F2 | Ac c2 dcAd | dAcd fag=e | 
 fdcA BG G2 :: dg g2 dfcA | (3GAG FG Ac c2 | dg (3agf g2 fg | af f2 afgf | gafg dfcA | GAFG Ac c2 | 
 d3 =e f2 (3gfe | fdcA BG G2 :|  