The music behind this clip is 'A Cruel Angel's Thesis,' the famous opening theme of Neon Genesis Evangelion, the 1995 anime series by Gainax, performed by Yoko Takahashi. Decades later the song became one of the most recognisable anime themes on the internet, quoted in countless memes and covers. The spoken line, 'qué buen dato, amigo,' is a Spanish-language meme phrase used to praise a good piece of trivia. Paired together on user soundboards, the two elements form a ready-made reaction: the grand anthem makes any small fact feel like a legendary discovery.