There are at least 2 artists releasing music under the name "Pyrrhon". 1. Pyrrhon are an avant-garde metal outfit from New York. The lineup consists of Doug Moore (vocals), Dylan DiLella (guitar), Alex Cohen (drums) and Erik Malave (bass). 2. Pyrrhon is also a pioneering extratone-speedcore artist from France. He is best known for his track "3.33 Minutes at 1000bpm, Terror Is Flawless" which (at time of writing) is the most listened to extratone-speedcore song on youtube with over 85'000 hits. Read more on Last.fm