Guilherme estava escutando uma de suas bandas favoritas, Dream Theater, enquanto caminhava até sua universidade, a música do momento era Octavarium. Normalmente ele escuta rock e heavy metal. Além de Dream Theater, ele também gosta bastante de Blind Guardian, Pink Floyd e Iron Maiden.
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Guilherme was listening to one of his favorite bands, Dream Theater, as he was walking to the university, the track at that moment was Octavarium. He normally listens to rock and heavy metal. Besides Dream Theater, he also likes Blind Guardian, Iron Maiden and Pink Floyd.
