I was watching the first season of Assassination Classroom and I really enjoyed this one song. On episode 19 of season 1, at 5:48, a song starts up that sounds techno-esque and I really like it. Which song is it?
This is track #18 from the season 1 soundtrack, titled 「エレクトリック会議」 Electric Kaigi "Electric Meeting". You can listen to an excerpt from this piece (and the rest of the OST, too) on the Amazon Japan page for the album.