Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:4/4
K:Gdor
['G2 GF GABc dBGA GFDE F2', 'B2 BA Bcde fdBc', 'ab/a/ ga/g/ fg/f/ ef/e/', 'G/A/B/c/ dB GBdB', 'gdgb gdgb']  
X:1
L:1/8
M:4/4
K:Gdor
 D2 | G2 GF GABc | dBGA GFDE | F2 FE FGAB | cAFA dcBA | G2 GF GABc | dBGA GFDE | F2 f2 dcBc | 
 AGGF G2 || A2 | B2 BA Bcde | fdBc B2 cB | AFcF dFcF | AFcF dcBA | B2 BA Bcde | fdBc BAGF | 
 G2 g2 fdcd | AGGF G2 || D2 | G2 g2 g2 fg | a2 g gfed | cBcd cd e/f/g/ | ab/a/ ga/g/ fg/f/ ef/e/ | 
 d2 g2 g2 df | a2 g2 gfed | cBcd cd ef/g/ | ab/a/ ga/g/ fg/f/ ef/e/ | d2 g2 g2 fg | 
 ab/a/ ga/g/ fg/f/ ef/e/ dfeg fdcd | AGGF G2 || D2 | G/A/B/c/ dB GBdB | F/G/A/B/ cA FAcA | 
 G/A/B/c/ dB GBdB | AFcF dcBA | G/A/B/c/ dB GBdB | F/G/A/B/ cA FAcA | dfeg fdcd | AGGF G2 || f2 | 
 gdgb gdgb | fcfa fcfa | gdgb gdgb | AFAc AFAc | dBdf cAce | BGBd cFAc | dfeg fdcd | AGGF G2 ||  