Kosma has seen 54 bands.

Band Concerts Seen
  Avatar 8 concerts
  Ice Nine Kills 5 concerts
  After the Burial 3 concerts
  In This Moment 3 concerts
  Alpha Wolf 2 concerts
  Ghost 2 concerts
  Kim Dracula 2 concerts
  Knocked Loose 2 concerts
  Motionless In White 2 concerts
  Scene Queen 2 concerts
  Spiritbox 2 concerts
  Sum 41 2 concerts
  The Funeral Portrait 2 concerts
  Alexisonfire 1 concert
  Alkaline Trio 1 concert
  Amon Amarth 1 concert
  Atheist 1 concert
  August Burns Red 1 concert
  Avenged Sevenfold 1 concert
  BABYMETAL 1 concert
  Blessthefall 1 concert
  Carcass 1 concert
  Conquer Divide 1 concert
  Daisy Grenade 1 concert
  Death to All 1 concert