Nerdcore is a fairy new genre of music. It is characterized as music that deals with or relates to topics that nerds, geeks or gamers would understand/relate to.
there are a few youtube channels that specialize in this type of music.
EX. Jt music, Rockit gaming, Divide, Fabvl and Nerdout.
Person A: You know that YouTube channel nerdout?
person B: Yeah why?
Person A: They released a new Nerdcore song.