Create a musical composition adhering to the provided thematic and alphabetical guidelines.
X:1
L:1/16
M:2/4
K:G
['GABc dBgf eg2e d2BG', 'cAF2- FAce dBG2-']  
X:1
L:1/16
M:2/4
K:G
 D2 | GABc dBgf | eg2e d2BG | DGEG DGAB | Ae2f edcA | GABc dBgf | eg2e d2BG | EG2e dBcd | 
 ea2f g2 :: d2 | cAF2- FAce | dBG2- GBdg | fedc BdcA | BGD2- D2d2 | cAF2- FAce | dBG2- GEGc | 
 BDGB cdfa | g2b2g2 :|  