Katherine Castillo has seen 37 bands.

Band Concerts Seen
  Harry Styles 6 concerts
  5 Seconds of Summer 5 concerts
  Jonas Brothers 3 concerts
  Kacey Musgraves 3 concerts
  Bebe Rexha 2 concerts
  Jenny Lewis 2 concerts
  Jordan McGraw 2 concerts
  U2 2 concerts
  Anne-Marie 1 concert
  A R I Z O N A 1 concert
  Box Set 1 concert
  Ed Sheeran 1 concert
  Emblem3 1 concert
  Fall Out Boy 1 concert
  Fifth Harmony 1 concert
  Garbage 1 concert
  Green Day 1 concert
  Hannah Montana 1 concert
  Hayley Kiyoko 1 concert
  Kalin & Myles 1 concert
  Marc Douglas Berardo 1 concert
  Maroon 5 1 concert
  Matt Nathanson 1 concert
  Miley Cyrus 1 concert
  MKTO 1 concert