Kosma has seen 50 bands.

Band Concerts Seen
  Ice Nine Kills 4 concerts
  After the Burial 3 concerts
  Avatar 3 concerts
  Alpha Wolf 2 concerts
  Ghost 2 concerts
  Kim Dracula 2 concerts
  Knocked Loose 2 concerts
  Metallica 2 concerts
  MOD SUN 2 concerts
  Motionless In White 2 concerts
  New Years Day 2 concerts
  Palaye Royale 2 concerts
  Scene Queen 2 concerts
  Spiritbox 2 concerts
  Stand Atlantic 2 concerts
  Sum 41 2 concerts
  Alexisonfire 1 concert
  Alkaline Trio 1 concert
  Amon Amarth 1 concert
  August Burns Red 1 concert
  Avenged Sevenfold 1 concert
  Carcass 1 concert
  Conquer Divide 1 concert
  Daisy Grenade 1 concert
  Fall Out Boy 1 concert