Create a musical composition adhering to the provided thematic and alphabetical guidelines.
X:1
L:1/8
M:4/4
K:G
['G/A/B/c/ dG cGdG BGdG gd B2 G/A/B/c/', 'Ggdg Bgdg Ggde dG B2']  
X:1
L:1/8
M:4/4
K:G
 G/A/B/c/ dG cGdG | BGdG gd B2 | G/A/B/c/ dc BdGd | AcFA fc A2 :: Ggdg Bgdg | Ggde dG B2 | 
 Ggdg BgGg | fgde AF g2 | Ggdg Bgdg | Ggde dG B2 | Ggfg dgBg | Aece AF A2 :|  