Crystal Jewels S01E22 - Rock and Groll!

On their path on Route 4, the brawlers have discovered something going on. A loud music causes everyone a bad headache, so the brawlers stops the Bad Band Crew by fighting fire with fire, with the help of Dustin. Dustin, geting the brawler's assistance as Band Crew Members in order to stop them. Dustin also reveals that he was a gooddrum player. The Crystal Brawlers sang the song "Can't Beat the Loudness", which has made Dustin furious enough to beat up the Bad Band Crew members. Kouchu and co escapes from the fight and run on their way to Dark City.